6Stephen N, John C. Status of systems biology-does it have a future? BIOSILICO, 2004, 2: 171-174.
7Kitano H. Systems biology: a brief overview. Science, 2002, 295:1662-1664.
8Kitano H. Systems biology: toward system-level understanding of biological systems. In: Kitano H,ed. Foundations of systems biology. Massachusettes: MIT Press,2001.1-29.
9Davis R,Shrobe H,Szolovits P.What is a knowledge representation? AI Magazine, 1993, 14:17-33.
10Harris MA, Clark J, Ireland A, et al. The Gene ontology (GO) database and informatics resource. Nucleic Acids Research, 2004, 32: 258-261.