Wanhong Xu Larkshmi Krishnamurthy Murat Tasan Gultekin Özsoyoglu Joseph H. Nadeau Z. Meral Özsoyoglu Greg Schaeffer Pathways Database System: An Integrated Set of Tools for Biological Pathways. 96-102 2003 conf/sac/2003 SAC db/conf/sac/sac2003.html#XuKTONOS03