@article{DAN_1973_209_2_a15,
     author = {B. V. Bazalii and V. Shelepov},
     title = {Mixed problem with a free boundary for {Laplace{\textquoteright}s} equation},
     journal = {Doklady Akademii Nauk},
     pages = {320--323},
     publisher = {mathdoc},
     volume = {209},
     number = {2},
     year = {1973},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1973_209_2_a15/}
}