@article{MS2_1957__5_165667,
     author = {C.T. RAJAGOPAL},
     title = {On an absolute constant for a class of power series},
     journal = {Mathematica Scandinavica},
     pages = {267--270},
     publisher = {mathdoc},
     volume = {5},
     year = {1957},
     zbl = {0080.28101},
     url = {http://geodesic.mathdoc.fr/item/MS2_1957__5_165667/}
}