@article{SPS_1988__22__92_0,
     author = {Yan, Jia-An},
     title = {A formula for densities of transition functions},
     journal = {S\'eminaire de probabilit\'es de Strasbourg},
     pages = {92--100},
     publisher = {Springer - Lecture Notes in Mathematics},
     volume = {22},
     year = {1988},
     mrnumber = {960514},
     zbl = {0662.60081},
     language = {en},
     url = {http://www.numdam.org/item/SPS_1988__22__92_0/}
}