1. Altman, D.G. (1991), Practical Statistics for Medical Research, London: Chapman & Hall, p.404.
2. Bloomfield, J., Jonsson, G.K., Polman, R.C.P., Houlahan, K., and O’Donoghue, P.G. (2005). Temporal Pattern Analysis and its Applicability in Soccer. In: The Hidden Structure of Social Interaction. From Genomics to Cultural Patterns (Edited by L. Anolli, S. Duncan, M. Magnusson, and G. Riva), Amsterdam: IOS Press B.V. pp. 237–251.
3. Grehaigne, J.F., Bouthier, D. and David, B. (1997), A method to analyse attacking moves in soccer, In Science and Football III (Edited by Reilly, T., Bangsbo, J. and Hughes, M.), London: E&FN Spon, 258–264.
4. Hughes, M. and Franks, I.M. (2004). Notational Analysis of Sport: Systems for better coaching and performance in sport (2nd Ed.).Routledge, Champaign, IL: Human Kinetics