Vincent van Oostrom. Sub-Birkhoff. In Yukiyoshi Kameyama, Peter J. Stuckey, editors, Functional and Logic Programming, 7th International Symposium, FLOPS 2004, Nara, Japan, April 7-9, 2004, Proceedings. Volume 2998 of Lecture Notes in Computer Science, pages 180-195, Springer, 2004. [doi]
Abstract is missing.