KALINKA, V. Generalization of Loo Keng-Hua’s lemma for an algebraic number fields. Lithuanian Mathematical Journal, [S. l.], v. 3, n. 1, p. 149–155, 1963. DOI: 10.15388/LMJ.1963.19415. Disponível em: https://www.zurnalai.vu.lt/LMJ/article/view/19415. Acesso em: 6 jul. 2025.