1. Ishihara, H.: J. Sci. Hiroshima Univ. Ser. A: Phys. Chem. 45, 319–355 (1981)
2. Kyuntsel', I.A.; Mokeeva, V.A.: Russ. J. Coord. Chem. 27(12), 835–837 (2001)
3. Grechishkin, V.S.; Gordeev, A.D.: Yad. Kvadrupol'nyi Rezon. 1, 49–74 (1976)
4. Gordeev, A.D.; Kyuntsel', I.A.: Radiospektroskopiya (9), 86–95 (1975)