Nonexpansive selections of metric projections in spaces of continuous functions. - Yoav Benyamini; Rafael Espínola; Genaro López-Acedo (J. Approx. Theory, 2005)

Nearest and farthest points in spaces of curvature bounded below. - Rafael Espínola; Chong Li 002; Genaro López-Acedo (J. Approx. Theory, 2010)

Pythagorean Property and Best-Proximity Point Theorems. - Rafael Espínola; G. Sankara Raju Kosuru; P. Veeramani (J. Optim. Theory Appl., 2015)