@article{DBLP:journals/jacm/Wand78,
author = {Mitchell Wand},
title = {A New Incompleteness Result for Hoare's System},
journal = {J. ACM},
volume = {25},
number = {1},
year = {1978},
pages = {168-175},
ee = {http://doi.acm.org/10.1145/322047.322062},
bibsource = {DBLP, http://dblp.uni-trier.de}
}