@article{DAN_1992_323_1_a1,
     author = {N. S. Bakhvalov and M. \`E. \`Eglit},
     title = {On the rate of propagation of perturbations in micro-inhomogeneous},
     journal = {Doklady Akademii Nauk},
     pages = {13--18},
     publisher = {mathdoc},
     volume = {323},
     number = {1},
     year = {1992},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1992_323_1_a1/}
}