@article{ELMA_1971__26_141023,
     author = {B. Weissbach},
     title = {Zu {Formeln} von {Fejes} {T\'oth} und {Hoppe} f\"ur den {Inhalt} sph\"arischer {Tetraeder.}},
     journal = {Elemente der Mathematik},
     pages = {109--111},
     publisher = {mathdoc},
     volume = {26},
     year = {1971},
     zbl = {0222.50015},
     url = {http://geodesic.mathdoc.fr/item/ELMA_1971__26_141023/}
}