Zubiaga Vera, Willy. “STRICT CONVEXITY THROUGH EQUIVALENT NORMS IN SEPARABLES BANACH SPACES”. Selecciones Matemáticas 3, no. 02 (December 11, 2016): 107-112. Accessed March 3, 2026. https://revistas.unitru.edu.pe/index.php/SSMM/article/view/1256.