@article{EMJ_2014_5_1_a5,
     author = {B. N. Biyarov},
     title = {On {Volterra} relatively compact perturbations of the {Laplace} operator},
     journal = {Eurasian mathematical journal},
     pages = {135--140},
     publisher = {mathdoc},
     volume = {5},
     number = {1},
     year = {2014},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EMJ_2014_5_1_a5/}
}