@article{01021600, title = {The Equichordal Point Problem.}, journal = {Electronic Research Announcements of the American Mathematical Society [electronic only]}, volume = {02}, year = {1996}, pages = {108-123}, doi = {10.1090/S1079-6762-96-00015-7}, zbl = {0871.52001}, language = {en}, url = {http://dml.mathdoc.fr/item/01021600} }
Rychlik, Marek. The Equichordal Point Problem.. Electronic Research Announcements of the American Mathematical Society [electronic only], Tome 02 (1996) pp. 108-123. doi : 10.1090/S1079-6762-96-00015-7. http://gdmltest.u-ga.fr/item/01021600/