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@article{DAN_1972_202_3_a14, author = {D. K. Faddeev}, title = {On the measure of the set of the midpoints of chords of a plane continuum}, journal = {Doklady Akademii Nauk}, pages = {551--552}, publisher = {mathdoc}, volume = {202}, number = {3}, year = {1972}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1972_202_3_a14/} }
D. K. Faddeev. On the measure of the set of the midpoints of chords of a plane continuum. Doklady Akademii Nauk, Tome 202 (1972) no. 3, pp. 551-552. http://geodesic.mathdoc.fr/item/DAN_1972_202_3_a14/