diff --git a/content/Biokemi/Plasmidlabb/Referenser.md b/content/Biokemi/Plasmidlabb/Referenser.md
index 06e81b9..8f4ba2e 100644
--- a/content/Biokemi/Plasmidlabb/Referenser.md
+++ b/content/Biokemi/Plasmidlabb/Referenser.md
@@ -19,6 +19,19 @@
 	- P A Sharp, B Sugden, J Sambrook
 	- 1973
 	- 10.1021/bi00740a018
+---
+**Jackson, Symons & Berg (1972)**
+
+_Biochemical method for inserting new genetic information into DNA of Simian Virus 40: Circular SV40 DNA molecules containing lambda phage genes and the galactose operon of Escherichia coli._
+PNAS 1972.
+PMCID: PMC389671
+PMID: 4342968
+
+→ Nobelpriset 1980 till Paul Berg
+
+
+
+