@article{UFA_2014_6_1_a6,
     author = {S. G. Merzlyakov},
     title = {Cauchy--Hadamard theorem for exponential series},
     journal = {Ufa mathematical journal},
     pages = {71--79},
     publisher = {mathdoc},
     volume = {6},
     number = {1},
     year = {2014},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/UFA_2014_6_1_a6/}
}