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Ventsel, H. S. (Helene Sergeevna) (Personal Name)
Her Operations research, 1983: t.p. (H. S. Ventzel) cover (Helena S. Ventzel)
LC manual auth. cd. (hdg.: Ventt²sel#, Elena Sergeevna; usage: E. S. Ventt²sel#)
Grekova, I. The ship of widows, 1985: t.p. (I. Grekova) p. v (I. Grekova is a pseudomym of Elena Sergeevna Ventzel, mathematician)
Her Applied problems in probability theory, 1986: t.p. (E. Wentzel) jkt. (Professor Elena Sergeevna Wentzel, D.Sc. (Eng.))