1988 ◽
Vol 2
(1)
◽
pp. 38-45
Philip Greenspun
◽
James J. Little
1987 ◽
Vol 11
(1)
◽
pp. 11-19
◽
1990 ◽
Vol 6
(1)
◽
pp. 55-56
M.D. Atkinson
◽
J.S. Heslop-Harrison
1967 ◽
Vol EC-16
(6)
◽
pp. 784-790
◽
Herbert Freeman
◽
Philippe P. Loutrel
1971 ◽
Vol 14
(3)
◽
pp. 232-237
◽
1973 ◽
Vol 5
(3)
◽
pp. 196
1981 ◽
Vol 13
(1)
◽
pp. 19-26
◽
1982 ◽
Vol 6
(4)
◽
pp. 141-157
M. Periasamy
◽
D.K. Ravindra