@article{CMH_1943__16_138836,
     author = {Paul L\'evy},
     title = {Un th\'eor\`eme d'invariance projective relatif au mouvement brownien.},
     journal = {Commentarii mathematici Helvetici},
     pages = {242--248},
     publisher = {mathdoc},
     volume = {16},
     year = {1943},
     zbl = {0063.03528},
     url = {http://geodesic.mathdoc.fr/item/CMH_1943__16_138836/}
}