Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{CMH_1939__12_138733, author = {Ta Li}, title = {\"Uber die allgemeine lineare {Differentialgleichung.}}, journal = {Commentarii mathematici Helvetici}, pages = {1--19}, publisher = {mathdoc}, volume = {12}, year = {1939}, language = {de}, url = {http://geodesic.mathdoc.fr/item/CMH_1939__12_138733/} }
Ta Li. Über die allgemeine lineare Differentialgleichung.. Commentarii mathematici Helvetici, Tome 12 (1939), pp. 1-19. http://geodesic.mathdoc.fr/item/CMH_1939__12_138733/