SCIENTOMETRICS, vol. 88, no. 3, page. 863 - 883, 2011-09
EXPERT SYSTEMS WITH APPLICATIONS, vol. 38, no. 8, page. 10484 - 10492, 2011-08
EXPERT SYSTEMS WITH APPLICATIONS, vol. 38, no. 7, page. 8352 - 8369, 2011-07
SCIENTOMETRICS, vol. 86, no. 3, page. 687 - 703, 2011-03