\bibitem{CousotCousot-2012-01-21-Pre-POPL-Yak} P.~Cousot and R.~Cousot. \newblock Abstract Hoare Logic. \newblock In Pre-POPL Yak International, CIMS, NYU, January 21st, 2011. @inproceedings{CousotCousot-2012-01-21-Pre-POPL-Yak, author = {Patrick Cousot and Radhia Cousot}, title = {Abstract Hoare Logic}, booktitle = {Pre-POPL Yak International, CIMS, NYU}, month = jan # " 21st", year = {2011}, }