@article{GDZPPN002023520,
title = {Nearly Spherical Surfaces. (Short Communication).},
journal = {Aequationes mathematicae},
volume = {2},
year = {1969},
pages = {200-200},
zbl = {0177.49501},
url = {http://dml.mathdoc.fr/item/GDZPPN002023520}
}
Guggenheimer, H. Nearly Spherical Surfaces. (Short Communication).. Aequationes mathematicae, Tome 2 (1969) p. 200. http://gdmltest.u-ga.fr/item/GDZPPN002023520/