Carlos A. Oller. Teaching Sound Principles about Invalidity. In Patrick Blackburn, Hans P. van Ditmarsch, María Manzano, Fernando Soler-Toscano, editors, Tools for Teaching Logic - Third International Congress, TICTTL 2011, Salamanca, Spain, June 1-4, 2011. Proceedings. Volume 6680 of Lecture Notes in Computer Science, pages 178-182, Springer, 2011. [doi]
Abstract is missing.