Anju Singhal
发表
P. P. Gupta,
Anju Singhal,
G. S. Srivastava,
1990
.
Rakesh Kumar Sharma,
P. P. Gupta,
Anju Singhal,
1987
.
Anju Singhal,
S. P. Singh,
P. P. Gupta,
1991
.