1. A sparse enhanced indexation model with norm and its alternating quadratic penalty method. Issue 3 (4th March 2019) Authors: Zhao, Zhihua; Xu, Fengmin; Wang, Meihua; Zhang, Cheng-yi Journal: Journal of the Operational Research Society Issue: Volume 70:Issue 3(2019) Page Start: 433 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗