Zhenjiang Hu Mario Rodríguez-Artalejo Editorial: the Sixth International Symposium on Functional and Logic Programming. 2003 2003 Journal of Functional and Logic Programming http://danae.uni-muenster.de/lehre/kuchen/JFLP/articles/2003/S03-01/JFLP-E03-01/editorial.pdf db/journals/jflp/jflp2003.html#HuR03