@article{SPS_1978__12__804_0,
     author = {Letta, Giorgio},
     title = {Un syst\`eme de notations pour les processus de {Markov}},
     journal = {S\'eminaire de probabilit\'es de Strasbourg},
     pages = {804--805},
     publisher = {Springer - Lecture Notes in Mathematics},
     volume = {12},
     year = {1978},
     mrnumber = {520048},
     zbl = {0377.60075},
     language = {fr},
     url = {http://archive.numdam.org/item/SPS_1978__12__804_0/}
}