@article{DAN_1982_267_2_a6,
     author = {Yu. G. Kondrat'ev and V. D. Koshmanenko},
     title = {The scattering problem for operators associated with {Dirichlet} forms},
     journal = {Doklady Akademii Nauk},
     pages = {285--288},
     publisher = {mathdoc},
     volume = {267},
     number = {2},
     year = {1982},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1982_267_2_a6/}
}