SPECTRAL PROPERTIES OF OPERATORS IN THE PROBLEM OF THE COMPRESSIBLE FLUID OSCILLATION IN ROTATING VESSELS Article PAL P.K. Doklady Akademii nauk SSSR. Mezhdunarodnaya Kniga, Moscow, Russian Federation. Vol. 281. 1985. P. 529-534
THE DIFFERENTIAL GEOMETRY OF BOL LOOPS Article SABININ L.V., MIKHEEV P.O. Doklady Akademii nauk SSSR. Mezhdunarodnaya Kniga, Moscow, Russian Federation. Vol. 281. 1985. P. 1055-1057