@article{SPS_1995__29__1_0,
     author = {Chebotarev, Alexander M. and Fagnola, Franco},
     title = {On quantum extensions of the {Az\'ema} martingale semi-group},
     journal = {S\'eminaire de probabilit\'es de Strasbourg},
     pages = {1--16},
     publisher = {Springer - Lecture Notes in Mathematics},
     volume = {29},
     year = {1995},
     mrnumber = {1459443},
     zbl = {0956.46044},
     language = {fr},
     url = {http://www.numdam.org/item/SPS_1995__29__1_0/}
}