Progress in Artificial Intelligence 9th Portuguese Conference on Artificial Intelligence, EPIA '99, Evora, Portugal, September 21-24, 1999, Proceedings Barahona Pedro Heftet / 1999 / Engelsk
Artificial Intelligence in Medicine 8th Conference on Artificial Intelligence in Medicine in Europe, AIME 2001 Cascais, Portugal, July 1-4, 2001, Proceedings Quaglini Silvana Heftet / 2001 / Engelsk
Artificial Intelligence in Medicine 5th Conference on Artificial Intelligence in Medicine Europe, AIME '95, Pavia, Italy, June 25 - 28, 1995. Proceedings Barahona Pedro Heftet / 1995 / Engelsk
Artificial Intelligence in Medicine 9th Conference on Artificial Intelligence in Medicine in Europe, AIME 2003, Protaras, Cyprus, October 18-22, 2003, Proceedings Dojat Michel Heftet / 2003 / Engelsk
EPIA'91 5th Portuguese Conference on Artificial Intelligence, Albufeira, Portugal, October 1-3, 1991. Proceedings Barahona Pedro Heftet / 1991 / Engelsk
Recent Advances in Constraints 11th Annual ERCIM International Workshop on Constraint Solving and Constraint Logic Programming, CSCLP 2006 Caparica, Portugal, June 26-28, 2006 Revised Selected and Invited Papers Azevedo, Francisco Heftet / 2007 / Engelsk
Reasoning Web Second International Summer School 2006, Lisbon, Portugal, September 4-8, 2006, Tutorial Lectures Barahona Pedro Heftet / 2006 / Engelsk