@article{DE_1994_30_6_a13,
     author = {A. S. Demidov and V. V. Petrova},
     title = {An inverse problem with a free boundary in equilibrium plasma theory},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1034--1038},
     publisher = {mathdoc},
     volume = {30},
     number = {6},
     year = {1994},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1994_30_6_a13/}
}