Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{ELMA_1949__4_140509, author = {W. Prokop}, title = {Zum {Drallsatz} f\"ur den starren {K\"orper.}}, journal = {Elemente der Mathematik}, pages = {56--61}, publisher = {mathdoc}, volume = {4}, year = {1949}, zbl = {0033.08501}, url = {http://geodesic.mathdoc.fr/item/ELMA_1949__4_140509/} }
W. Prokop. Zum Drallsatz für den starren Körper.. Elemente der Mathematik, Tome 4 (1949), pp. 56-61. http://geodesic.mathdoc.fr/item/ELMA_1949__4_140509/