Neuburg N, Burgueño C, Suazo A. Pivotal idempotents in the Bernstein algebras. CUBO [Internet]. 1990 Jul. 1 [cited 2024 May 8];(6):19–24. Available from: https://www.perspectivasdelacomunicacion.cl/ojs/index.php/cubo/article/view/1835