@article{EMJ_2020_11_4_a1,
     author = {B. N. Biyarov and D. L. Svistunov and G. K. Abdrasheva},
     title = {Correct singular perturbations of the {Laplace} operator},
     journal = {Eurasian mathematical journal},
     pages = {25--34},
     publisher = {mathdoc},
     volume = {11},
     number = {4},
     year = {2020},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EMJ_2020_11_4_a1/}
}