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@article{MAN_1886__28_157241, author = {Heymann}, title = {Theorie der trinomischen {Gleichungen}}, journal = {Mathematische Annalen}, pages = {61--80}, publisher = {mathdoc}, volume = {28}, year = {1886}, zbl = {18.0068.01}, url = {http://geodesic.mathdoc.fr/item/MAN_1886__28_157241/} }
Heymann. Theorie der trinomischen Gleichungen. Mathematische Annalen, Tome 28 (1886), pp. 61-80. http://geodesic.mathdoc.fr/item/MAN_1886__28_157241/