P. Ratnamahilan
发表
B.A.A.P. Balasuriya,
P. Ratnamahilan,
P. Hoole,
1995
.
S. Ratnajeevan,
H. Hoole,
P. Ratnamahilan,
1992
.
S. Ratnajeevan,
H. Hoole,
S. Jayakumaran,
1989
.
Thiagalingam Kirubarajan,
P. Ratnamahilan,
P. Hoole,
1995
.