@article{GDZPPN002476932,
title = {Fields of Planar Bodies Tangent to Spheres.},
journal = {Monatshefte f\"ur Mathematik},
volume = {74},
year = {1970},
pages = {145-149},
zbl = {0189.52901},
url = {http://dml.mathdoc.fr/item/GDZPPN002476932}
}
Mani, P. Fields of Planar Bodies Tangent to Spheres.. Monatshefte für Mathematik, Tome 74 (1970) pp. 145-149. http://gdmltest.u-ga.fr/item/GDZPPN002476932/