@article{DAN_1990_313_1_a9,
     author = {P. I. Etingof},
     title = {Integrability of filtration problems with a moving boundary},
     journal = {Doklady Akademii Nauk},
     pages = {42--47},
     publisher = {mathdoc},
     volume = {313},
     number = {1},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1990_313_1_a9/}
}