diff --git a/PR2Bib/src/domainBib/Bibliothek.java b/PR2Bib/src/domainBib/Bibliothek.java
new file mode 100644
index 0000000..143371b
--- /dev/null
+++ b/PR2Bib/src/domainBib/Bibliothek.java
@@ -0,0 +1,5 @@
+package domainBib;
+
+public class Bibliothek {
+
+}
diff --git a/PR2Bib/src/domainBib/Medium.java b/PR2Bib/src/domainBib/Medium.java
new file mode 100644
index 0000000..81e3fbb
--- /dev/null
+++ b/PR2Bib/src/domainBib/Medium.java
@@ -0,0 +1,8 @@
+package domainBib;
+
+public abstract class Medium {
+	private String titel;
+	private int erscheinungsjahr;
+	private String fälligkeitsDatum;
+	private int kennnummer;
+}
diff --git a/PR2Bib/src/guiBib/BibliothekGUI.java b/PR2Bib/src/guiBib/BibliothekGUI.java
new file mode 100644
index 0000000..d19200a
--- /dev/null
+++ b/PR2Bib/src/guiBib/BibliothekGUI.java
@@ -0,0 +1,5 @@
+package guiBib;
+
+public class BibliothekGUI {
+
+}