Causality discovery technology M. Chen, T. Ertl, M. Jirotka, A. Trefethen, A. Schmidt, B. Coecke and R. Bañares-Alcántara Eur. Phys. J. Special Topics, 214 (2012) 461-479 Published online: 05 December 2012 DOI: 10.1140/epjst/e2012-01702-4