%0 Journal Article %A Wilczynski, E.-J. %T Differential Properties of Functions of a Complex Variable which are Invariant under Linear Transformations; part I %J Journal de Mathématiques Pures et Appliquées %D 1922 %P 393-435 %V 1 %I Gauthier-Villars %U http://www.numdam.org/item/JMPA_1922_9_1__393_0/ %G en %F JMPA_1922_9_1__393_0