Stephen J. Fink Eran Yahav Nurit Dor G. Ramalingam Emmanuel Geay Effective typestate verification in the presence of aliasing. 2008 17 ACM Trans. Softw. Eng. Methodol. 2 http://doi.acm.org/10.1145/1348250.1348255 db/journals/tosem/tosem17.html#FinkYDRG08