Steve MacDonald Duane Szafron Jonathan Schaeffer John Anvik Steven Bromling Kai Tan Generative Design Patterns. 23- 2002 conf/kbse/2002 ASE http://csdl.computer.org/comp/proceedings/ase/2002/1736/00/17360023abs.htm db/conf/kbse/ase2002.html#MacDonaldSSABT02