DERZHKO, O.; RICHTER, J.; HONECKER, A.; SCHMIDT, H.-J. Universal properties of highly frustrated quantum magnets in strong magnetic fields. ФІЗИКА НИЗЬКИХ ТЕМПЕРАТУР, Харків, Україна, v. 33, n. 9, p. 982–996, 2007. DOI: 10.1063/1.2780166. Disponível em: https://fnt.ilt.kharkiv.ua/index.php/fnt/article/view/f33-0982e. Acesso em: 18 груд. 2024.