diff --git a/sci-publications/src/main/java/org/scientificcms/publications/GreyLiterature.java b/sci-publications/src/main/java/org/scientificcms/publications/GreyLiterature.java
new file mode 100644
index 0000000..b79cbda
--- /dev/null
+++ b/sci-publications/src/main/java/org/scientificcms/publications/GreyLiterature.java
@@ -0,0 +1,97 @@
+/*
+ * 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.hibernate.envers.Audited;
+
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.Table;
+
+import static org.scientificcms.publications.SciPublicationsConstants.*;
+
+/**
+ *
+ * @author <a href="mailto:jens.pelzetter@googlemail.com">Jens Pelzetter</a>
+ */
+@Entity
+@Table(name = "GREY_LITERATURE", schema = DB_SCHEMA)
+@Audited
+public class GreyLiterature extends UnPublished {
+
+    private static final long serialVersionUID = 1L;
+
+    @Column(name = "START_PAGE")
+    private int startPage;
+
+    @Column(name = "END_PAGE")
+    private int endPage;
+
+    public int getStartPage() {
+        return startPage;
+    }
+
+    public void setStartPage(final int startPage) {
+        this.startPage = startPage;
+    }
+
+    public int getEndPage() {
+        return endPage;
+    }
+
+    public void setEndPage(final int endPage) {
+        this.endPage = endPage;
+    }
+
+    @Override
+    public int hashCode() {
+        int hash = super.hashCode();
+        hash = 97 * hash + startPage;
+        hash = 97 * hash + endPage;
+        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 GreyLiterature)) {
+            return false;
+        }
+        final GreyLiterature other = (GreyLiterature) obj;
+        if (!other.canEqual(this)) {
+            return false;
+        }
+        if (startPage != other.getStartPage()) {
+            return false;
+        }
+        return endPage == other.getEndPage();
+    }
+
+    @Override
+    public boolean canEqual(final Object obj) {
+
+        return obj instanceof GreyLiterature;
+    }
+
+    @Override
+    public String toString(final String data) {
+
+        return super.toString(String.format("startPage = %d,"
+                                                + "endPage = %d%s",
+                                            startPage,
+                                            endPage,
+                                            data));
+    }
+
+}
diff --git a/sci-publications/src/main/java/org/scientificcms/publications/UnPublished.java b/sci-publications/src/main/java/org/scientificcms/publications/UnPublished.java
new file mode 100644
index 0000000..a344bc7
--- /dev/null
+++ b/sci-publications/src/main/java/org/scientificcms/publications/UnPublished.java
@@ -0,0 +1,136 @@
+/*
+ * 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.hibernate.envers.Audited;
+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 = "UNPUBLISHED", schema = DB_SCHEMA)
+@Audited
+public class UnPublished extends Publication {
+
+    private static final long serialVersionUID = 1L;
+
+    @Column(name = "PLACE", length = 2048)
+    private String place;
+
+    @Column(name = "PLACE", length = 512)
+    private String number;
+
+    @Column(name = "NUMBER_OF_PAGES")
+    private int numberOfPages;
+
+    @OneToOne
+    @JoinColumn(name = "ORGANIZATION")
+    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 int getNumberOfPages() {
+        return numberOfPages;
+    }
+
+    public void setNumberOfPages(final int numberOfPages) {
+        this.numberOfPages = numberOfPages;
+    }
+
+    public Organization getOrganization() {
+        return organization;
+    }
+
+    public void setOrganization(final Organization organization) {
+        this.organization = organization;
+    }
+
+    @Override
+    public int hashCode() {
+        int hash = super.hashCode();
+        hash = 37 * hash + Objects.hashCode(place);
+        hash = 37 * hash + Objects.hashCode(number);
+        hash = 37 * hash + numberOfPages;
+        hash = 37 * hash + Objects.hashCode(organization);
+        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 UnPublished)) {
+            return false;
+        }
+        final UnPublished other = (UnPublished) obj;
+        if (!other.canEqual(this)) {
+            return false;
+        }
+        if (numberOfPages != other.getNumberOfPages()) {
+            return false;
+        }
+        if (!Objects.equals(place, other.getPlace())) {
+            return false;
+        }
+        if (!Objects.equals(number, other.getNumber())) {
+            return false;
+        }
+        return Objects.equals(organization, other.getOrganization());
+    }
+
+    @Override
+    public boolean canEqual(final Object obj) {
+        return obj instanceof UnPublished;
+    }
+
+    @Override
+    public String toString(final String data) {
+
+        return super.toString(String.format("place = \"%s\", "
+                                                + "number = \"%s\", "
+                                                + "numberOfPages = %d, "
+                                                + "organization = %s%s",
+                                            place,
+                                            number,
+                                            numberOfPages,
+                                            Objects.toString(organization),
+                                            data));
+    }
+
+}
diff --git a/sci-publications/src/main/java/org/scientificcms/publications/WorkingPaper.java b/sci-publications/src/main/java/org/scientificcms/publications/WorkingPaper.java
new file mode 100644
index 0000000..ab6136a
--- /dev/null
+++ b/sci-publications/src/main/java/org/scientificcms/publications/WorkingPaper.java
@@ -0,0 +1,32 @@
+/*
+ * 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.hibernate.envers.Audited;
+
+import javax.persistence.Entity;
+import javax.persistence.Table;
+
+import static org.scientificcms.publications.SciPublicationsConstants.*;
+
+/**
+ *
+ * @author <a href="mailto:jens.pelzetter@googlemail.com">Jens Pelzetter</a>
+ */
+@Entity
+@Table(name = "WORKING_PAPERS", schema = DB_SCHEMA)
+@Audited
+public class WorkingPaper extends UnPublished {
+    
+    private static final long serialVersionUID = 1L;
+    
+    @Override
+    public boolean canEqual(final Object obj) {
+        
+        return obj instanceof WorkingPaper;
+    }
+    
+}