Van den Brink, J.; Stekelenburg, W.; Homskiy, D. İ.; Sawatzky, G. A.; Kugel, K. I. (1998). "Spin and orbital excitations in magnetic insulators with Jahn-Teller ions". Physical Review B (İngilizce). 58 (16). ss. 10276-10282. Bibcode:1998PhRvB..5810276V. doi:10.1103/PhysRevB.58.10276.
Van den Brink, J.; Stekelenburg, W.; Homskiy, D. İ.; Sawatzky, G. A.; Kugel, K. I. (1998). "Spin and orbital excitations in magnetic insulators with Jahn-Teller ions". Physical Review B (İngilizce). 58 (16). ss. 10276-10282. Bibcode:1998PhRvB..5810276V. doi:10.1103/PhysRevB.58.10276.