SYNTHESIS AND MOLECULAR STRUCTURE OF FUNCTIONALIZED TRIS[2-(4′-SUBSTITUTED BUTOXYPHENYL)]PHOSPHINE OXIDES AS PRECURSORS OF TRIPODAL LIGANDS СтатьяBaulina T.V., Kudryavtsev I.Y., Smolyakov A.F., Pasechnik M.P., Brel V.K.Heteroatom Chemistry. Том 29. 2018.