@article{DAN_1986_289_5_a11,
     author = {L. P. Vinnik and R. Kind and G. L. Kosarev and L. I. Makeeva},
     title = {Laterally inhomogeneous anisotropy of the
},
     journal = {Doklady Akademii Nauk},
     pages = {1075--1079},
     publisher = {mathdoc},
     volume = {289},
     number = {5},
     year = {1986},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1986_289_5_a11/}
}