@article{CM_1975__31_2_115_0, author = {Dressler, Robert E.}, title = {A property of the $\varphi $ and $\sigma \_j$ functions}, journal = {Compositio Mathematica}, pages = {115--118}, publisher = {Noordhoff International Publishing}, volume = {31}, number = {2}, year = {1975}, zbl = {0317.10008}, language = {en}, url = {archive.numdam.org/item/CM_1975__31_2_115_0/} }
Dressler, Robert E. A property of the $\varphi $ and $\sigma _j$ functions. Compositio Mathematica, Tome 31 (1975) no. 2, pp. 115-118. http://archive.numdam.org/item/CM_1975__31_2_115_0/
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