C. Chidambara and B. S. Kirangi
Yoshio Matsuyama
T. Duraivel
Z.J. Jakubowski; M. Majchrzak and K. Skalska
B.G.Pachpatte
S.R. Kulkarni; S.B. Joshi and M.K. Aouf
J.Paulraj Joseph and S.Arumugam
G.Ravindra and D.Basavayya
J. Patel