LIN, Fucai; LIU, Chuan; XIE, Li-Hong. Remainders of Semitopological Groups or Paratopological Groups. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 66, n. 4, p. 500–509, 2014. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2152. Acesso em: 5 dec. 2025.