CONTRIBUTORS

--- a/CONTRIBUTORS	Mon Mar 12 20:53:29 2018 +0100
+++ b/CONTRIBUTORS	Mon Mar 12 21:03:57 2018 +0100
@@ -6,6 +6,9 @@
 Contributions to this Isabelle version
 --------------------------------------
 
+* March 2018: Viorel Preoteasa
+  Generalisation of complete_distrib_lattice
+
 * January 2018: Sebastien Gouezel
   Various small additions to HOL-Analysis