@article{BSMF_1928__56__36_0,
     author = {Soula, J.},
     title = {Sur les points singuliers des deux fonctions $\sum a_n z^n$ et $\sum {z^n \over a_n}$},
     journal = {Bulletin de la Soci\'et\'e Math\'ematique de France},
     pages = {36--49},
     publisher = {Soci\'et\'e math\'ematique de France},
     volume = {56},
     year = {1928},
     doi = {10.24033/bsmf.1128},
     language = {fr},
     url = {http://www.numdam.org/articles/10.24033/bsmf.1128/}
}