1. Observer-based adaptive control for nonlinear input-delay systems with unknown control directions. Issue 8 (11th June 2019) Authors: Ma, Jiali; Zhuang, Guangming; Cui, Guozeng; Wang, Jiaqi Journal: International journal of systems science Issue: Volume 50:Issue 8(2019) Page Start: 1543 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗