Toshiaki Aoki Takuya Katayama Foundations for Evolutionary Construction of State Transition Models. 143-146 2004 conf/iwpse/2004 IWPSE http://csdl.computer.org/comp/proceedings/iwpse/2004/2211/00/22110143abs.htm db/conf/iwpse/iwpse2004.html#AokiK04