NICKEL(II) COMPLEXES WITH CYTOSINE AND THREONINE: SYNTHESIS AND STRUCTURE Article Pugachev D.V., Esina N.Y., Kurasova M.N., Fortalnova E.A., Venskovskii N.U., Lazarenko V.A., Trigub A.L., Khrustalev V.N. Journal of Structural Chemistry. Vol. 58. 2017. P. 1318-1323