HIRATA, Yasushi; YAJIMA, Yukinobu. Inequality and equality for the extent of products with a special factor. Topology Proceedings, [S. l.], v. 59, p. 223–241, 2021. Disponível em: https://www.topologyproceedings.org/index.php/tp/article/view/47. Acesso em: 30 jun. 2026.