@article{CMH_1956__31_139140,
     author = {Chuji Tanaka},
     title = {On the singularities of {DIRICHLET} series.},
     journal = {Commentarii mathematici Helvetici},
     pages = {184--194},
     publisher = {mathdoc},
     volume = {31},
     year = {1956},
     zbl = {0081.06806},
     url = {http://geodesic.mathdoc.fr/item/CMH_1956__31_139140/}
}