@article{ZNSL_1987_165_a14,
     author = {N. S. Smirnova},
     title = {Following screened perturbations in an elastic medium with a thin layer},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {159--165},
     year = {1987},
     volume = {165},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1987_165_a14/}
}