@article{SPS_1990__24__397_0,
     author = {Dermoune, Azzouz},
     title = {Formule de composition pour une classe d'op\'erateurs},
     journal = {S\'eminaire de probabilit\'es de Strasbourg},
     pages = {397--401},
     publisher = {Springer - Lecture Notes in Mathematics},
     volume = {24},
     year = {1990},
     mrnumber = {1071556},
     zbl = {0711.60059},
     language = {fr},
     url = {http://archive.numdam.org/item/SPS_1990__24__397_0/}
}