1. From requirements to design: Formalizing the key steps;Dromey,2003
2. A methodology for behaviour design of autonomous systems;Iske,2001
3. Behavior trees for modelling artificial intelligence in games: A tutorial;Marcotte;The Computer Games Journal,2017
4. A behavior language for story-based believable agents;Mateas;IEEE Intell. Syst.,2002
5. D. Isla, Handling Complexity in the Halo 2 AI, in: Gamasutra - GDC 2005 Proceeding, 2005, https://www.gamasutra.com/view/feature/130663/gdc_2005_proceeding_handling_.php?print=1.