EXPERIMENTAL AND THEORETICAL STUDY OF THE INFLUENCE OF PERIPHERAL ENVIRONMENT ON MAGNETIC PROPERTIES OF TETRANUCLEAR MANGANESE SKELETON IN NEW REPRESENTATIVES OF CALIX[4]ARENE-CONTAINING [MNII2 MNIII2] CLUSTERS СтатьяAldoshin S.M., Antipin I.S., Solov’Eva S.E., Sanina N.A., Korchagin D.V., Shilov G.V., Mushenok F.B., Utenyshev A.N., Bozhenko K.V.Journal of Molecular Structure. Том 1,081. 2015. С. 217-223