Alishaev, D. M. Stabilität der Strömungen einer idealen inhomogenen Flüssigkeit. (Russian) Zbl 0446.76051 Vestn. Mosk. Univ., Ser. III 21, 32-36 (1980). MSC: 76E99 × Cite Format Result Cite Review PDF
Agakov, V. G. On necessary conditions for a regular minimum of the scaling factor of a moving space. (Russian) Zbl 0445.76097 Vestn. Mosk. Univ., Ser. III 21, 80-83 (1980). MSC: 76Y05 76U05 82B99 × Cite Format Result Cite Review PDF