@article{CM_1940__7__474_0, author = {Fejes, L.}, title = {Eine Bemerkung zur Approximation durch n-Eckringe}, journal = {Compositio Mathematica}, volume = {7}, year = {1940}, pages = {474-476}, mrnumber = {1588}, zbl = {0022.26702}, language = {de}, url = {http://dml.mathdoc.fr/item/CM_1940__7__474_0} }
Fejes, L. Eine Bemerkung zur Approximation durch n-Eckringe. Compositio Mathematica, Tome 7 (1940) pp. 474-476. http://gdmltest.u-ga.fr/item/CM_1940__7__474_0/