Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MAN_1889__33_157404, author = {Heun}, title = {Beitr\"age zur {Theorie} der {Lame'schen} {Functionen.}}, journal = {Mathematische Annalen}, pages = {180--196}, publisher = {mathdoc}, volume = {33}, year = {1889}, language = {de}, url = {http://geodesic.mathdoc.fr/item/MAN_1889__33_157404/} }
Heun. Beiträge zur Theorie der Lame'schen Functionen.. Mathematische Annalen, Tome 33 (1889), pp. 180-196. http://geodesic.mathdoc.fr/item/MAN_1889__33_157404/