Kyrov Vladimir Alexandrovich «On the embedding of two-dimetric phenomenologically symmetric geometries» // Tomsk State University Journal of Mathematics and Mechanics 2018. №56 C.5-16
Bogdanova Rada A. «On one system of functional equations for embedding an additive rank (2, 2) into a dual rank (3, 2) of two-metric phenomenologically symmetric geometries of two sets» // Tomsk State University Journal of Mathematics and Mechanics 2024. №92 C.5-18
