Computers & Mathematics with Applications
Computers and Mathematics with Applications > 1999 > 37 > 9 > 103-122
Computers and Mathematics with Applications > 1999 > 38 > 2 > 97-112
Computers and Mathematics with Applications > 1999 > 38 > 7-8 > 243-261
Computers and Mathematics with Applications > 1999 > 38 > 11-12 > 113-129