Computers & Mathematics with Applications
Computers and Mathematics with Applications > 1999 > 37 > 3 > 23-30
Computers and Mathematics with Applications > 1999 > 38 > 5-6 > 231-241
Computers and Mathematics with Applications > 1999 > 37 > 3 > 23-30
Computers and Mathematics with Applications > 1999 > 38 > 5-6 > 231-241