diff --git a/sci-publications/src/main/java/org/scientificcms/publications/Expertise.java b/sci-publications/src/main/java/org/scientificcms/publications/Expertise.java
new file mode 100644
index 0000000..1c8198b
--- /dev/null
+++ b/sci-publications/src/main/java/org/scientificcms/publications/Expertise.java
@@ -0,0 +1,127 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package org.scientificcms.publications;
+
+import org.librecms.assets.Organization;
+
+import java.util.Objects;
+
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.JoinColumn;
+import javax.persistence.OneToOne;
+import javax.persistence.Table;
+
+import static org.scientificcms.publications.SciPublicationsConstants.*;
+
+/**
+ *
+ * @author <a href="mailto:jens.pelzetter@googlemail.com">Jens Pelzetter</a>
+ */
+@Entity
+@Table(name = "EXPERTISES", schema = DB_SCHEMA)
+public class Expertise extends Publication {
+
+    private static final long serialVersionUID = 1L;
+
+    @Column(name = "PLACE", length = 512)
+    private String place;
+
+    @Column(name = "NUMBER_OF_PAGES")
+    private Integer numberOfPages;
+
+    @OneToOne
+    @JoinColumn(name = "ORGANIZATION_ID")
+    private Organization organization;
+
+    @OneToOne
+    @JoinColumn(name = "ORDERER_ID")
+    private Organization orderer;
+
+    public String getPlace() {
+        return place;
+    }
+
+    public void setPlace(final String place) {
+        this.place = place;
+    }
+
+    public Integer getNumberOfPages() {
+        return numberOfPages;
+    }
+
+    public void setNumberOfPages(final Integer numberOfPages) {
+        this.numberOfPages = numberOfPages;
+    }
+
+    public Organization getOrganization() {
+        return organization;
+    }
+
+    public void setOrganization(final Organization organization) {
+        this.organization = organization;
+    }
+
+    public Organization getOrderer() {
+        return orderer;
+    }
+
+    public void setOrderer(final Organization orderer) {
+        this.orderer = orderer;
+    }
+
+    @Override
+    public int hashCode() {
+        int hash = super.hashCode();
+        hash = 17 * hash + Objects.hashCode(place);
+        hash = 17 * hash + Objects.hashCode(numberOfPages);
+        return hash;
+    }
+
+    @Override
+    public boolean equals(final Object obj) {
+        if (this == obj) {
+            return true;
+        }
+        if (obj == null) {
+            return false;
+        }
+        if (!super.equals(obj)) {
+            return false;
+        }
+        if (!(obj instanceof Expertise)) {
+            return false;
+        }
+        final Expertise other = (Expertise) obj;
+        if (!other.canEqual(this)) {
+            return false;
+        }
+        if (!Objects.equals(numberOfPages, other.getNumberOfPages())) {
+            return false;
+        }
+        return Objects.equals(place, other.getPlace());
+    }
+
+    @Override
+    public boolean canEqual(final Object obj) {
+        return obj instanceof Expertise;
+    }
+
+    @Override
+    public String toString(final String data) {
+
+        return super.toString(String.format(", place = \"%s\", "
+                                                + "numberOfPages = %d, "
+                                                + "organization = %s, "
+                                                + "orderer = %s%s",
+                                            place,
+                                            Objects.toString(numberOfPages),
+                                            Objects.toString(organization),
+                                            Objects.toString(orderer),
+                                            data));
+    }
+
+}
diff --git a/sci-publications/src/main/java/org/scientificcms/publications/InternetArticle.java b/sci-publications/src/main/java/org/scientificcms/publications/InternetArticle.java
new file mode 100644
index 0000000..6a1bfb3
--- /dev/null
+++ b/sci-publications/src/main/java/org/scientificcms/publications/InternetArticle.java
@@ -0,0 +1,249 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package org.scientificcms.publications;
+
+import org.librecms.assets.Organization;
+
+import java.time.LocalDate;
+import java.util.Objects;
+
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.JoinColumn;
+import javax.persistence.OneToOne;
+import javax.persistence.Table;
+
+import static org.scientificcms.publications.SciPublicationsConstants.*;
+
+/**
+ *
+ * @author <a href="mailto:jens.pelzetter@googlemail.com">Jens Pelzetter</a>
+ */
+@Entity
+@Table(name = "INTERNET_ARTICLES", schema = DB_SCHEMA)
+public class InternetArticle extends Publication {
+
+    private static final long serialVersionUID = 1L;
+
+    @Column(name = "PLACE", length = 512)
+    private String place;
+
+    @Column(name = "NUMBER", length = 256)
+    private String number;
+
+    @Column(name = "NUMBER_OF_PAGES")
+    private Integer numberOfPages;
+
+    @Column(name = "EDITION", length = 512)
+    private String edition;
+
+    @Column(name = "ISSN", length = 9)
+    private String issn;
+
+    @Column(name = "LAST_ACCESSED")
+    private LocalDate lastAccessed;
+
+    @Column(name = "PUBLICATION_DATE")
+    private LocalDate publicationDate;
+
+    @Column(name = "URL", length = 2048)
+    private String url;
+
+    @Column(name = "URN", length = 2048)
+    private String urn;
+
+    @Column(name = "DOI", length = 2048)
+    private String doi;
+
+    @OneToOne
+    @JoinColumn(name = "ORGANIZATION_ID")
+    private Organization organization;
+
+    public String getPlace() {
+        return place;
+    }
+
+    public void setPlace(final String place) {
+        this.place = place;
+    }
+
+    public String getNumber() {
+        return number;
+    }
+
+    public void setNumber(final String number) {
+        this.number = number;
+    }
+
+    public Integer getNumberOfPages() {
+        return numberOfPages;
+    }
+
+    public void setNumberOfPages(final Integer numberOfPages) {
+        this.numberOfPages = numberOfPages;
+    }
+
+    public String getEdition() {
+        return edition;
+    }
+
+    public void setEdition(final String edition) {
+        this.edition = edition;
+    }
+
+    public String getIssn() {
+        return issn;
+    }
+
+    public void setIssn(final String issn) {
+        this.issn = issn;
+    }
+
+    public LocalDate getLastAccessed() {
+        return lastAccessed;
+    }
+
+    public void setLastAccessed(final LocalDate lastAccessed) {
+        this.lastAccessed = lastAccessed;
+    }
+
+    public LocalDate getPublicationDate() {
+        return publicationDate;
+    }
+
+    public void setPublicationDate(final LocalDate publicationDate) {
+        this.publicationDate = publicationDate;
+    }
+
+    public String getUrl() {
+        return url;
+    }
+
+    public void setUrl(final String url) {
+        this.url = url;
+    }
+
+    public String getUrn() {
+        return urn;
+    }
+
+    public void setUrn(final String urn) {
+        this.urn = urn;
+    }
+
+    public String getDoi() {
+        return doi;
+    }
+
+    public void setDoi(final String doi) {
+        this.doi = doi;
+    }
+
+    public Organization getOrganization() {
+        return organization;
+    }
+
+    public void setOrganization(final Organization organization) {
+        this.organization = organization;
+    }
+
+    @Override
+    public int hashCode() {
+        int hash = super.hashCode();
+        hash = 97 * hash + Objects.hashCode(place);
+        hash = 97 * hash + Objects.hashCode(number);
+        hash = 97 * hash + Objects.hashCode(numberOfPages);
+        hash = 97 * hash + Objects.hashCode(edition);
+        hash = 97 * hash + Objects.hashCode(issn);
+        hash = 97 * hash + Objects.hashCode(lastAccessed);
+        hash = 97 * hash + Objects.hashCode(publicationDate);
+        hash = 97 * hash + Objects.hashCode(url);
+        hash = 97 * hash + Objects.hashCode(urn);
+        hash = 97 * hash + Objects.hashCode(doi);
+        return hash;
+    }
+
+    @Override
+    public boolean equals(final Object obj) {
+        if (this == obj) {
+            return true;
+        }
+        if (obj == null) {
+            return false;
+        }
+        if (!super.equals(obj)) {
+            return false;
+        }
+        if (!(obj instanceof InternetArticle)) {
+            return false;
+        }
+        final InternetArticle other = (InternetArticle) obj;
+        if (!other.canEqual(this)) {
+            return false;
+        }
+        if (!Objects.equals(place, other.getPlace())) {
+            return false;
+        }
+        if (!Objects.equals(number, other.getNumber())) {
+            return false;
+        }
+        if (!Objects.equals(edition, other.getEdition())) {
+            return false;
+        }
+        if (!Objects.equals(issn, other.getIssn())) {
+            return false;
+        }
+        if (!Objects.equals(url, other.getUrl())) {
+            return false;
+        }
+        if (!Objects.equals(urn, other.getUrn())) {
+            return false;
+        }
+        if (!Objects.equals(doi, other.getDoi())) {
+            return false;
+        }
+        if (!Objects.equals(numberOfPages, other.getNumberOfPages())) {
+            return false;
+        }
+        if (!Objects.equals(lastAccessed, other.getLastAccessed())) {
+            return false;
+        }
+        return Objects.equals(publicationDate, other.getPublicationDate());
+    }
+
+    @Override
+    public boolean canEqual(final Object obj) {
+        return obj instanceof InternetArticle;
+    }
+
+    @Override
+    public String toString(final String data) {
+        return super.toString(String.format(", place = \"%s\", "
+                                                + "number = \"%s\", "
+                                                + "edition = \"%s\", "
+                                                + "issn = \"%s\", "
+                                                + "url = \"%s\", "
+                                                + "urn = \"%s\", "
+                                                + "doi = \"%s\", "
+                                                + "numberOfPages = %d, "
+                                                + "lastAccessed = %s, "
+                                                + "publicationDate = %s, "
+                                                + "organization = %s%s",
+                                            place,
+                                            number,
+                                            edition,
+                                            issn,
+                                            url,
+                                            urn,
+                                            doi,
+                                            numberOfPages,
+                                            Objects.toString(lastAccessed),
+                                            Objects.toString(publicationDate),
+                                            Objects.toString(organization),
+                                            data));
+    }
+
+}