PĂCURAR, Cristina; TÂRNOVEANU, Mirela Adriana. Mappings contracting perimeters of triangles in perturbed metric spaces. Altay Conference Proceedings in Mathematics, [S. l.], v. 1, n. 1, p. 68–72, 2025. DOI: 10.64700/altay.18. Disponível em: https://mail.altayconfproceedings.com/index.php/pub/article/view/18. Acesso em: 17 may. 2026.