Duplicate title to Abbott, R., Albach, D., Ansell, S., Arntzen, J.W., Baird, S.J.E., Bierne, N., Boughman, J., Brelsford, A., Buerkle, C.A., Buggs, R., Butlin, R.K., & Dieckmann, U. ORCID: https://orcid.org/0000-0001-7089-0393 (2013). Hybridization and speciation. IIASA Interim Report. IIASA, Laxenburg, Austria: IR-13-021