Generalized quadratic mean Functions of Entire Functions Defined by Dirichlet Series J. S. Gupta; Shakti Bala — 1973 Δελτίο της Ελληνικής Μαθηματικής Εταιρίας
Generalized Quadratic mean Function of entire Functions Defined by Dirichlet series (I) J. S. Gupta; Shakti Bala — 1972 Δελτίο της Ελληνικής Μαθηματικής Εταιρίας
Generalized Quadratic Mean Function of Entire Functions Defined by Dirichlet Series (III) Shakti Bala; S. J Gupta — 1974 Δελτίο της Ελληνικής Μαθηματικής Εταιρίας
Growth numbers of Entire Functions Defined by Dirichlet Series J. S. Gupta; Shakti Bala — 1973 Δελτίο της Ελληνικής Μαθηματικής Εταιρίας
Arithmetic mean function of the real part of entire Dirichlet series I J. S. Gupta; Shakti Bala — 1975 Annales Polonici Mathematici