KUMAR, Anurag; VYAS, Aparna; KIM, Gibak. Extended unique fixed point theorem in complete quasi-metric space. Bulletin of Taras Shevchenko National University of Kyiv. Physics and Mathematics, [S. l.], v. 82, n. 1, p. 13–16, 2026. DOI: 10.17721/1812-5409.2026/1.2. Disponível em: https://bphm.knu.ua/bphm/article/view/594. Acesso em: 10 oct. 2026.