@article{SPS_1991__25__284_0,
     author = {Dubins, Lester E. and \'Emery, Michel and Yor, Marc},
     title = {A continuous martingale in the plane that may spiral away to infinity},
     journal = {S\'eminaire de probabilit\'es de Strasbourg},
     pages = {284--290},
     publisher = {Springer - Lecture Notes in Mathematics},
     volume = {25},
     year = {1991},
     mrnumber = {1187786},
     zbl = {0737.60036},
     language = {fr},
     url = {http://www.numdam.org/item/SPS_1991__25__284_0/}
}