Selfing and sibship structure in a two-cohort stand of maritime pine (Pinus pinaster Ait.) using nuclear SSR markers Santiago C. González-Martínez, Sophie Gerber, María-Teresa Cervera, José-Miguel Martínez-Zapater, Ricardo Alía and Luis Gil Ann. For. Sci., 60 2 (2003) 115-121 DOI: 10.1051/forest:2003003