1. Amaya-Amaya, M. and Ryan, M. (forthcoming). Between contribution and confusion: between contribution and confusion: an investigation of the impact of complexity in stated preferences choice experiments. Journal of Health Economics, under review.
2. Baker, R., Chilton, S., Donaldson, C., Jones-Lee, M., Metcalf, H., Shackley, P. and Ryan, M. 2003. Determining the societal value of a QALY by surveying the public in England and Wales: a research protocol. Birmingham, UK: NCCRM Publications.
3. Bateman, I.J., Day, B.H., Dupont, D., Georgiou, S., Louviere, J.J., Morimoto, S. and Wang, P. 2004. Preference formation in choice experiments (CE): task awareness and learning in the cognitive process. Paper presented at the 13th annual conference of the European Association of Environmental and Resource Economics (EAERE). Budapest, 25–28 June 2004. http://eaere2004.bkae.hu/download/paper/bateman2paper.doc .
4. Ben-Akiva, M. and Boccara, B. 1995. Discrete choice models with latent choice sets. International Journal of Research in Marketing, vol 12, 9–24.
5. Ben-Akiva, M., McFadden, D., Train, K., et al. 2002a. Hybrid choice models: progress and challenges. Marketing Letters, vol 13 (3), 163–175.