Monostability, bistability, periodicity and chaos in gene regulatory network Qiang Lai, Xiao-Wen Zhao, Jian-Ning Huang, Viet-Thanh Pham and Karthikeyan Rajagopal Eur. Phys. J. Special Topics, 227 7-9 (2018) 719-730 Published online: 19 October 2018 DOI: 10.1140/epjst/e2018-700132-8