1. R. P. Boas,Some elementary theorems on entire functions, Rend. Circ. Mat. Palermo, (2)8 (1952), pp. 323–331.
2. J. Gopalakrishna, A type theorem for
$$\mathop \smallint \limits^x f(t)/tdt$$
, J. Indian Math. Soc.,30 (1966), pp. 73–78.
3. V. G. Iyer,A property of the maximum modulus of integral functions, J. Indian Math. Soc.,6 (1942), pp. 69–80.
4. Pawan Kumar Jain,Growth of the mean values of an entire function represented by Dirichlet series, Math. Nach.,44 (1970), pp. 91–97.
5. Pawan Kumar Jain,Geometric means of an entire Dirichlet series, Rend. di Mat., (3)7, Ser. VI (1975), pp. 395–401.