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@article{AM2_1978__17_136733, author = {J.S. Hwang and Paul Erd\"os}, title = {On a geometric property of {Lemniscates.} {(Short} {Communication).}}, journal = {Aequationes mathematicae}, pages = {118--120}, publisher = {mathdoc}, volume = {17}, year = {1978}, zbl = {0383.30001}, url = {http://geodesic.mathdoc.fr/item/AM2_1978__17_136733/} }
J.S. Hwang; Paul Erdös. On a geometric property of Lemniscates. (Short Communication).. Aequationes mathematicae, Tome 17 (1978), pp. 118-120. http://geodesic.mathdoc.fr/item/AM2_1978__17_136733/