by SANTANU DAS GUPTA, DAS GUPTA, S. R
Published in Astrophysics and space science (01.10.1991)

by SANTANU DAS GUPTA, DAS GUPTA, S. R
Published in Astrophysics and space science (01.11.1987)

by DAS GUPTA, S. R, CHITTA RANJAN NAYAK, SANTANU DAS GUPTA
Published in Astrophysics and space science (01.08.1984)

by Das Gupta, S. R., Das Gupta, Santanu
Published in Astrophysics and space science (1984)

by Das Gupta, S. R., Nayak, Chitta Ranjan, Das Gupta, Santanu
Published in Astrophysics and space science (01.08.1984)

by Das Gupta, S R, DAS GUPTA, S
Published in Astrophysics and space science (01.08.1984)