You may also wish to search for items by Ivanchikova, R. and Ivanchikova.
Only one matching reference was found.
Babich, S.V.; Ivanchikova, R.A.; Serafimov, L.A., Investigation of liquid-vapor phase equilibrium in the systems acetone - ethyl acetate - methyl ethyl ketone and acetone - methyl acetate - methyl ethyl ketone under atmospheric pressure, Zh. Prikl. Khim. (Leningrad), 1969, 42, 1354-7. [all data]