1. Upper Bound Solution of Safety Factor for Shallow Tunnels Face Using a Nonlinear Failure Criterion and Shear Strength Reduction Technique. (15th June 2016) Authors: Huang, Fu; Li, Zai-lan; Ling, Tong-hua Other Names: Strelniker Yakov Academic Editor. Journal: Mathematical problems in engineering Issue: Volume 2016(2016) Page Start: Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗