SYNTHESIS, ELECTRONIC AND INFRARED-ABSORPTION SPECTRA AND THE STRUCTURE OF COPPER(II) AND ZINC(II) COMPLEXES WITH 2-HYDROXY-5-SULFAMIDOPHENYLAZDACETOACETANILIDE СтатьяZAITSEV B.E., IVLIEVA V.I., VOLYANSKII O.V., NIKIFOROV E.V., NAUMOVA I.A.ЖУРНАЛ НЕОРГАНИЧЕСКОЙ ХИМИИ. Том 32. 1987. С. 956-962