@article{1183507196,
author = {Busemann, H. and Feller, W.},
title = {Regularity properties of a certain class of surfaces},
journal = {Bull. Amer. Math. Soc.},
volume = {51},
number = {11},
year = {1945},
pages = { 583-598},
language = {en},
url = {http://dml.mathdoc.fr/item/1183507196}
}
Busemann, H.; Feller, W. Regularity properties of a certain class of surfaces. Bull. Amer. Math. Soc., Tome 51 (1945) no. 11, pp. 583-598. http://gdmltest.u-ga.fr/item/1183507196/