Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{ELMA_1979__34_141229, author = {Ingrid Mengersen}, title = {Vierseitige {Fl\"achen} in {Geradenordnungen.}}, journal = {Elemente der Mathematik}, pages = {55--59}, publisher = {mathdoc}, volume = {34}, year = {1979}, zbl = {0398.51001}, url = {http://geodesic.mathdoc.fr/item/ELMA_1979__34_141229/} }
Ingrid Mengersen. Vierseitige Flächen in Geradenordnungen.. Elemente der Mathematik, Tome 34 (1979), pp. 55-59. http://geodesic.mathdoc.fr/item/ELMA_1979__34_141229/