CRYSTAL STRUCTURE OF CHLORIDO{1-(2,3-DIMETHYL-5-OXIDO-1-PHENYL-1H-PYRAZOL-2-IUM-4-YL-?O)-2-[3-METHYL-5-OXO-1-PHENYL-4,5-DIHYDRO-1H-PYRAZOL-4-YLIDENE-?O]HYDRAZIN-1-IDO-?N1}COPPER(II) FROM LABORATORY X-RAY POWDER DATA Article Kovalchukova Olga, Van Nguen, Strashnova Svetlana, Kuznetsov Dmitry, Berikashvili Teimuraz Acta Crystallographica Section E: Crystallographic Communications. International Union of Crystallography. 2015. P. 124-127