1. Mikirticheva, G.A., Shitova, V.I., Petrova, M.A., et al., Phase Diagram of the Zn2P2O7-Li4P2O7 System, Zh. Prikl. Khim. (St. Petersburg), 1995, vol. 68, no.3, pp. 462–467.
2. Petrova, M.A., Novikova, A.S., and Grebenshchikov, R.G., Phase Relationships in the Li2ZnP2O7-Na2ZnP2O7 System, Zh. Prikl. Khim. (St. Petersburg), 1996, vol. 69, no.2, pp. 186–191.
3. Mal'shikov, A.E., Popova, V.F., and Grebenshchikov, R.G., Phase Relationships in the Na2ZnP2O7-K2ZnP2O7 System, Zh. Prikl. Khim. (St. Petersburg), 1997, vol. 70, no.8, pp. 1241–1244.
4. Petrova, M.A., Novikova, A.S., Romanov, D.P., and Grebenshchikov, R.G., Phase Relationships in the Li2ZnP2O7-K2ZnP2O7 System, Zh. Prikl. Khim. (St. Petersburg), 1999, vol. 72, no.3, pp. 367–371.
5. Petrova, M.A., Novikova, A.S., Mal'shikov, A.E., Popova, V.F., and Grebenshchikov, R.G., Phase Relationships along the M 2ZnP2O7-M 2′ZnP2O7 Sections in the M 4P2O7-M 4′P2O7-Zn2P2O7 (M, M′ = Li, Na, or K) Systems, Zh. Neorg. Khim., 2000, vol. 45, no.2, pp. 266–270.