Pedro Larrañaga Ramon Etxeberria José Antonio Lozano José Manuel Peña Combinatonal Optimization by Learning and Simulation of Bayesian Networks. 343-352 2000 conf/uai/2000 UAI http://rome.exp.sis.pitt.edu/UAI/Abstract.asp?articleID=41&proceedingID=16 db/conf/uai/uai2000.html#LarranagaELP00