Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{CMH_1945__18_138871, author = {H. Hadwiger}, title = {\"Uberdeckung einer {Menge} durch {Mengen} kleineren {Durchmessers.}}, journal = {Commentarii mathematici Helvetici}, pages = {73--75}, publisher = {mathdoc}, volume = {18}, year = {1945}, zbl = {0063.01851}, url = {http://geodesic.mathdoc.fr/item/CMH_1945__18_138871/} }
H. Hadwiger. Überdeckung einer Menge durch Mengen kleineren Durchmessers.. Commentarii mathematici Helvetici, Tome 18 (1945), pp. 73-75. http://geodesic.mathdoc.fr/item/CMH_1945__18_138871/