@article{AIHPB_1989__25_4_443_0,
     author = {Vallois, P.},
     title = {Sur le passage de certaines marches al\'eatoires planes au-dessus d'une hyperbole \'equilat\`ere},
     journal = {Annales de l'I.H.P. Probabilit\'es et statistiques},
     pages = {443--456},
     publisher = {Gauthier-Villars},
     volume = {25},
     number = {4},
     year = {1989},
     mrnumber = {1045245},
     zbl = {0701.60069},
     language = {fr},
     url = {http://archive.numdam.org/item/AIHPB_1989__25_4_443_0/}
}