A short-term divergent selection for resistance to Teladorsagia circumcincta in Romanov sheep using natural or artificial challenge Lucas Gruner, Jacques Bouix, Jacqueline Vu Tien Khang, Nathalie Mandonnet, Francis Eychenne, Jacques Cortet, Christine Sauvé and Claude LimouzinGenet. Sel. Evol., 36 2 (2004) 217-242DOI: https://doi.org/10.1051/gse:2003060