@article{MOMA_1988__105_2_178381,
     author = {P. Mani-Levitska},
     title = {A {Simple} {Proof} of the {Kinematic} {Formula.}},
     journal = {Monatshefte f\"ur Mathematik},
     pages = {279--286},
     publisher = {mathdoc},
     volume = {105},
     number = {2},
     year = {1988},
     zbl = {0652.60018},
     url = {http://geodesic.mathdoc.fr/item/MOMA_1988__105_2_178381/}
}