Similar title to Doebeli, M., Blok, H.J., Leimar, O., & Dieckmann, U. ORCID: https://orcid.org/0000-0001-7089-0393 (2006). Multimodal Pattern Formation in Phenotype Distributions of Sexual Populations. IIASA Interim Report. IIASA, Laxenburg, Austria: IR-06-046