@article{DAN_1967_174_6_a9,
     author = {V. N. Monakhov},
     title = {Two-dimensional and axisymmetric percolation problems with free boundaries in an inhomogeneous medium},
     journal = {Doklady Akademii Nauk},
     pages = {1271--1273},
     year = {1967},
     volume = {174},
     number = {6},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1967_174_6_a9/}
}