In this paper, we give lower bounds for ∫H0|F(it)|kdt, where k=1 or 2 and F(s) is a Dirichlet series of a certain kind. Since the conditions on F(s) are relaxed, the bounds are somewhat smaller than those obtained previously.
R. Balasubramanian;K. Ramachandra, 1992, On the zeros of a class of generalised Dirichlet series-X, Indagationes Mathematicae, 3, 4, pp. 391-402, 10.1016/0019-3577(92)90018-g.