@article{IIGUM_2014_8_a8,
     author = {N. V. Kurganova and E. A. Lutkovskaya and V. A. Terletsky},
     title = {Identity of {Optimality} {Conditions} for {Elastic} {Vibrations} in {Different} {Auxiliary} {Interpretations} of {Wave} {Problem}},
     journal = {The Bulletin of Irkutsk State University. Series Mathematics},
     pages = {115--124},
     publisher = {mathdoc},
     volume = {8},
     year = {2014},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IIGUM_2014_8_a8/}
}