Kitahara, S. and Takahashi, W. (1993) “Image recovery by convex combinations of sunny nonexpansive retractions”, Topological Methods in Nonlinear Analysis, 2(2), pp. 333–342. Available at: https://apcz.umk.pl/TMNA/article/view/TMNA.1993.046 (Accessed: 22 July 2024).