J.M. Bergada, E. Valencia, Li. Coll
N.P. Wagle, R. Govindarajulu
J.H. Hwang
Ken Atkinson
H.L. Röder
Bernard Molin
Jack Simpson, Louis A. Fiori
R F R Towndrow, R D Groome
V. Ferdinande, B.G. Kritis
H. Catling
