1. Multi-valued graph contraction principle with applications. (2nd August 2020) Authors: Petruşel, Adrian; Petruşel, Gabriela; Yao, Jen-Chih Journal: Optimization Issue: Volume 69:Number 7/8(2020) Page Start: 1541 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗