Communications of The ACM

•    Vol. 55, No. 6, June 2012
•    Vol. 55, No. 7, July 2012
•    Vol. 55, No. 8, August 2012
•    Vol. 55, No. 9, September 2012
•    Vol. 56, No. 2, February 2013
•    Vol. 56, No. 3, March 2013
•    Vol. 56, No. 5, May 2013
•    Vol. 56, No. 6, June 2013
•    Vol. 56, No. 7, July 2013
•    Vol. 56, No. 9, September 2013
•    Vol. 56, No. 12, December 2013