SPECTRAL PROPERTIES OF OPERATORS IN THE PROBLEM OF THE COMPRESSIBLE FLUID OSCILLATION IN ROTATING VESSELS СтатьяPAL P.K.Doklady Akademii nauk SSSR. Том 281. 1985. С. 529-534
THE DIFFERENTIAL GEOMETRY OF BOL LOOPS СтатьяSABININ L.V., MIKHEEV P.O.Doklady Akademii nauk SSSR. Том 281. 1985. С. 1055-1057