Computers & Mathematics with Applications
Computers and Mathematics with Applications > 2009 > 57 > 5 > 772-788
Computers and Mathematics with Applications > 2009 > 58 > 11-12 > 2416-2419
Computers and Mathematics with Applications > 2009 > 58 > 11-12 > 2452-2455
Computers and Mathematics with Applications > 2009 > 58 > 11-12 > 2423-2426