%0 Journal Article %A Wilczynski, E.-J. %T Differential Properties of Functions of a Complex Variable which are Invariant under Linear Transformations %J Journal de Mathématiques Pures et Appliquées %D 1923 %P 1-51 %V 2 %I Gauthier-Villars %U http://www.numdam.org/item/JMPA_1923_9_2__1_0/ %G en %F JMPA_1923_9_2__1_0