1. P.W. Anderson, More is different, Sci. Ser. 177, 393 (1972)
2. O.J. Blanchard, The State of Macro, NBER Working Paper No. 14259, 2008
3. F. Capra, U. Mattei, The Ecology of Law (Berrett-Koehler, 2015)
4. M. Gallegati, S. Keen, T. Lux, P. Ormerod, Physica A 370, 1 (2006)
5. M. Gallegati, The Economy of the Hamster (World Economic Association, Bristol, 2015)