The number of k-ary divisors of a generalized integer Suryanarayana, D.; Prasad, V. Siva Rama — 1974 Portugaliae mathematica
Inequalities related to the unitary analogue of Lehmer problem. Siva Rama Prasad, V.; Dixit, Uma — 2006 JIPAM. Journal of Inequalities in Pure & Applied Mathematics [electronic only]
The number of k-ary, (k + 1)-free divisors of an integer. D. Suryanarayana; V. Siva Rama Prasad — 1975 Journal für die reine und angewandte Mathematik
The number of k-free divisors of an integer. II. D. Suryanarayana; V. Siva Rama Prasad — 1975 Journal für die reine und angewandte Mathematik
Correction to the paper "The number of k-free and k-ary divisors of m which are prime to n". D. Suryanarayana; V. Siva Rama Prasad — 1974 Journal für die reine und angewandte Mathematik
The number of k-free divisors of an integer D. Suryanarayana; V. Siva Rama Prasad — 1971 Acta Arithmetica