A renorming of ℓ 2 , rare but with the fixed-point property. Jiménez-Melado, Antonio; Llorens-Fuster, Enrique — 2003 International Journal of Mathematics and Mathematical Sciences
The fixed point theory for some generalized nonexpansive mappings. Fuster, Enrique Llorens; Gálvez, Elena Moreno — 2011 Abstract and Applied Analysis