Computers & Mathematics with Applications
Computers and Mathematics with Applications > 1999 > 37 > 9 > 73-84
Computers and Mathematics with Applications > 1999 > 38 > 11-12 > 71-78
Computers and Mathematics with Applications > 1999 > 37 > 9 > 73-84
Computers and Mathematics with Applications > 1999 > 38 > 11-12 > 71-78