Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MZ_1932__35_168378, author = {W., Haack}, title = {Zylindrische {Strahlensysteme}}, journal = {Mathematische Zeitschrift}, pages = {660--683}, publisher = {mathdoc}, volume = {35}, year = {1932}, zbl = {0005.02402}, url = {http://geodesic.mathdoc.fr/item/MZ_1932__35_168378/} }
W., Haack. Zylindrische Strahlensysteme. Mathematische Zeitschrift, Tome 35 (1932), pp. 660-683. http://geodesic.mathdoc.fr/item/MZ_1932__35_168378/