For details on methods for summary statistics selection, see
Blum, M. G. B, Nunes, M. A., Prangle, D. and Sisson, S. A. (2013) A comparative review of dimension reduction methods in approximate Bayesian computation. Stat. Sci. (to appear).
Fearnhead, P. and Prangle, D. (2012) Constructing summary statistics for approximate Bayesian computation: semi-automatic approximate Bayesian computation. J. R. Stat. Soc. B 74, Part 3, 1--28.
Joyce, P. and P. Marjoram (2008) Approximately sufficient statistics and Bayesian computation. Stat. Appl. Gen. Mol. Biol. 7 Article 26.
Nunes, M. A. and Balding, D. J. (2010) On Optimal Selection of Summary Statistics for Approximate Bayesian Computation. Stat. Appl. Gen. Mol. Biol. 9, Iss. 1, Art. 34.
Wegmann, D. et al. (2009) Efficient approximate Bayesian computation coupled With Markov chain Monte Carlo Without Likelihood. Genetics 182 (4), 1207--1218.
For extra scripts used for pls.abc, see:Wegmann, D. et al. (2010) ABCtoolbox: A versatile toolkit for approximate Bayesian computations. BMC Bioinf. 11, 116--123.