@article{MOMA_1970__74_177498,
     author = {P. Mani},
     title = {Fields of {Planar} {Bodies} {Tangent} to {Spheres.}},
     journal = {Monatshefte f\"ur Mathematik},
     pages = {145--149},
     publisher = {mathdoc},
     volume = {74},
     year = {1970},
     zbl = {0189.52901},
     url = {http://geodesic.mathdoc.fr/item/MOMA_1970__74_177498/}
}