@article{DAN_1981_261_3_a18,
     author = {L. B. Glebov and I. S. Morozova and G. T. Petrovskiǐ},
     title = {Conditions for the phase synchronism in a gradient waveguide},
     journal = {Doklady Akademii Nauk},
     pages = {589--591},
     publisher = {mathdoc},
     volume = {261},
     number = {3},
     year = {1981},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1981_261_3_a18/}
}