Trippe C, Klümper A. Quantum phase transitions and thermodynamics of quantum antiferromagnets with competing interactions. Fiz. Nizk. Temp. [інтернет]. 26, Вересень 2007 [цит. за 10, Листопад 2025];33(11):1213-21. доступний у: http://80.92.230.95/index.php/fnt/article/view/f33-1213e