Sergey Levine'S Lecture Note on Imitation Learning:
http://rail.eecs.berkeley.edu/deeprlcourse/static/slides/lec-2.pdf

Imitation Learning Tutorial (By Yisong Yue and Hoang M. Le):
https://sites.google.com/view/icml2018-imitation-learning/

Generative Adversarial Imitation Learning (By Jonathan Ho and Stefano Ermon):
https://arxiv.org/pdf/1606.03476.pdf

Fast Policy Learning through Imitation and Reinforcement (By Ching-An Cheng, Xinyan Yan, Nolan Wagener, and Byron Boots):
https://arxiv.org/pdf/1805.10413.pdf