1. Ashby WR (1958) Requisite variety and its implications for the control of complex systems. Cybern 1(2):83–99
2. Ashby, W. R. (2013). Design for a brain: the origin of adaptive behaviour. Springer Science & Business Media
3. Barney JB (1991) Firm resources and sustained competitive advantage. J Manag 17:203–228
4. Barreto I (2009) Dynamic capabilities: a review of past research and an agenda for the future. J Manag 36(1):256–280
5. Bar-Yam Y (2004) Multiscale variety in complex systems. Complexity 9(4):37–45