@article{GDZPPN002240289,
title = {Zur Theorie des Kr\"ummungsmaasses, Von E. Beltrami in Bologna.},
journal = {Mathematische Annalen},
volume = {1},
year = {1869},
pages = {575-582},
language = {de},
url = {http://dml.mathdoc.fr/item/GDZPPN002240289}
}
Beltrami, E. Zur Theorie des Krümmungsmaasses, Von E. Beltrami in Bologna.. Mathematische Annalen, Tome 1 (1869) pp. 575-582. http://gdmltest.u-ga.fr/item/GDZPPN002240289/