@article{IVM_2019_2_a1,
     author = {I. A. Bikchantaev},
     title = {Doubly periodic problem on a jump~for linear elliptic second order equation with constant coefficients},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {13--20},
     publisher = {mathdoc},
     number = {2},
     year = {2019},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_2019_2_a1/}
}