M-quasi-hyponormal composition operators. Suri, Pushpa R.; Singh, N. — 1987 International Journal of Mathematics and Mathematical Sciences
Time series modelling of the Kobe-Osaka earthquake recordings. Singh, N.; Tampubolon, D.; Yadavalli, V. S. S. — 2002 International Journal of Mathematics and Mathematical Sciences
Conformal Infinitesimal Transformations Of Almost Paracontact Metric Structures B. B. Sinha; R. N. Singh — 1982 Publications de l'Institut Mathématique