References

Gol’dberg, A.A., 1959. Elementary remarks on the formulas defining order and type of functions of several variable. Akad. Nauk. Armjan SSR. Dokl., 29: 145-151.

Iyer, V.G., 1942. A property of the maximum modulus of integral functions. J. Indian Math. Soc., 6: 69-80.
Direct Link  |  

Izumi, S.I. 1929. Integral functions defined by Dirichlet’s series. Jpn. J. Math. Trans. Abstracts, 6: 199-204.
Direct Link  |  

Kumar, A. and A. Rastogi, 2014. On the order and type of entire functions represented by dirichlet series in two variables. J. Global Res. Math. Arch., 2: 37-42.
Direct Link  |  

Ritt, J.F., 1928. On certain points in the theory of Dirichlet series. Am. J. Math., 50: 73-86.
CrossRef  |  Direct Link  |  

Shah, S.M. and S.K. Singh, 1958. Note on a step function. Q. J. Math., 9: 63-67.
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