1. K. O. Aremu, C. Izuchukwu, G. C. Ugwunnadi and O. T. Mewomo,
On the proximal point algorithm and demimetric mappings in CAT(0)\rm CAT(0) spaces,
Demonstr. Math. 51 (2018), no. 1, 277–294.
2. D. Ariza-Ruiz, G. López-Acedo and A. Nicolae,
The asymptotic behavior of the composition of firmly nonexpansive mappings,
J. Optim. Theory Appl. 167 (2015), no. 2, 409–429.
3. K. Ball, E. A. Carlen and E. H. Lieb,
Sharp uniform convexity and smoothness inequalities for trace norms,
Invent. Math. 115 (1994), no. 3, 463–482.
4. M. Bethke,
Approximation von Fixpunkten streng pseudokontraktiver Operatoren,
Wiss. Z. Pädagog. Hochsch. “Liselotte Herrmann” Güstrow Math.-Natur. Fak. 27 (1989), no. 2, 263–270.
5. M. R. Bridson and A. Haefliger,
Metric Spaces of Non-positive Curvature,
Grundlehren Math. Wiss. 319,
Springer, Berlin, 1999.