1. Kharitonov YuYa, Machkhosvili RI (1971) Zh Neorg Khimii 16: 924
2. Kharitonov YuYa, Machkhosvili RI, Metreveli DP (1976) Koordinatsionnaya khimiya 2: 131
3. Mostafa MM, Nicholls D (1981) Inorg Chim Acta 51: 35
4. Machakhoshvili RI, Shalamberidze TV, Shchelokov RN (1982) Zh Neorg Khim 27: 1226
5. Machkhoshvili RI, Shalamberidze TV, Shchelokov RN (1982) Zh Neorg Khim 27: 1725