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@article{MOMA_1986__102_178304, author = {Karl Prachar and August Florian}, title = {On the {Diophantine} {Equation} tan (k .../m) = k tan .../m.}, journal = {Monatshefte f\"ur Mathematik}, pages = {263--266}, publisher = {mathdoc}, volume = {102}, year = {1986}, zbl = {0597.10017}, url = {http://geodesic.mathdoc.fr/item/MOMA_1986__102_178304/} }
Karl Prachar; August Florian. On the Diophantine Equation tan (k .../m) = k tan .../m.. Monatshefte für Mathematik, Tome 102 (1986), pp. 263-266. http://geodesic.mathdoc.fr/item/MOMA_1986__102_178304/