O F Lazareva

Use of number by crows: investigation by matching and oddity learning.

A A Smirnova, O F Lazareva, Z A Zorina, 2000, Journal of the experimental analysis of behavior.

Transitive inference in hooded crows: preliminary data.

A A Smirnova, O F Lazareva, Z A Zorina, 2000, Doklady biological sciences : proceedings of the Academy of Sciences of the USSR, Biological sciences sections.