@article{DAN_1991_321_4_a12,
     author = {V. L. Rvachev and N. S. Sinekop and I. P. Molotkov},
     title = {The method of $R$-functions in contact problems of},
     journal = {Doklady Akademii Nauk},
     pages = {701--704},
     publisher = {mathdoc},
     volume = {321},
     number = {4},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1991_321_4_a12/}
}