@INPROCEEDINGS{FabregasEtAl10-logics, author = {Ignacio F{\'a}bregas and de Frutos-Escrig, David and Miguel Palomino}, title = {Logics for Contravariant Simulations}, booktitle = {Formal Techniques for Distributed Systems, Joint 12th IFIP WG 6.1 International Conference, FMOODS 2010 and 30th IFIP WG 6.1 International Conference, FORTE 2010, Amsterdam, The Netherlands, June 7-9, 2010. Proceedings}, editor = {John Hatcliff and Elena Zucca}, series = {Lecture Notes in Computer Science}, publisher = {Springer}, volume = 6117, pages = {224-231}, year = 2010 }