@article{TVP_2021_66_1_a1,
     author = {Ya. I. Belopol'skaya},
     title = {Systems of nonlinear backward and forward {Kolmogorov} equations:},
     journal = {Teori\^a vero\^atnostej i ee primeneni\^a},
     pages = {20--54},
     year = {2021},
     volume = {66},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TVP_2021_66_1_a1/}
}