@article{SPS_1968__2__1_0,
     author = {Az\'ema, Jacques and Kaplan-Duflo, Marie and Revuz, Daniel},
     title = {Classes r\'ecurrentes d'un processus de {Markov}},
     journal = {S\'eminaire de probabilit\'es},
     pages = {1--21},
     year = {1968},
     publisher = {Springer - Lecture Notes in Mathematics},
     volume = {2},
     mrnumber = {242249},
     language = {fr},
     url = {https://www.numdam.org/item/SPS_1968__2__1_0/}
}