Lower bounds for the spectral norm. Merikoski, Jorma K.; Kumar, Ravinder — 2005 JIPAM. Journal of Inequalities in Pure & Applied Mathematics [electronic only]
Inequalities for spreads of matrix sums and products. Merikoski, Jorma K.; Kumar, Ravinder — 2004 Applied Mathematics E-Notes [electronic only]
A Note On A Class Of Noetherian Rings Ravinder Kumar; Kanchan Manaktala — 1975 Publications de l'Institut Mathématique