1 files changed, 9 insertions, 0 deletions
diff --git a/cybernetics.bib b/cybernetics.bib
index 8e4bc4d..af6fdc0 100755
--- a/cybernetics.bib
+++ b/cybernetics.bib
@@ -110,6 +110,15 @@
   url       = {}
 }
 
+% Cybernetica 1:2, p. 83-99
+@article{ashby1958,
+  title     = {Requisite variety and its implications for the control of complex systems},
+  author    = {W. Ross Ashby},
+  year      = {1958},
+  journal   = {Cybernetica},
+  url       = {http://pespmc1.vub.ac.be/books/AshbyReqVar.pdf},
+}
+
 @book{minsky1967,
   title     = {Computation: Finite and Infinite Machines},
   author    = {Marvin Minsky},