Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{CMH_1961__36_139223, author = {Margrit Frei}, title = {\"Uber die subnormalen {L\"osungen} der {Differentialgleichung} w... + e... w' + konst. ... {W} = 0.}, journal = {Commentarii mathematici Helvetici}, pages = {1--8}, publisher = {mathdoc}, volume = {36}, year = {1961}, zbl = {0115.06904}, url = {http://geodesic.mathdoc.fr/item/CMH_1961__36_139223/} }
Margrit Frei. Über die subnormalen Lösungen der Differentialgleichung w... + e... w' + konst. ... W = 0.. Commentarii mathematici Helvetici, Tome 36 (1961), pp. 1-8. http://geodesic.mathdoc.fr/item/CMH_1961__36_139223/