What sampling is needed for reliable estimations of genetic diversity in Fraxinus excelsior L. (Oleaceae)? Naoko Miyamoto, Juan F. Fernández-Manjarrés, Marie-Elise Morand-prieur, Paola Bertolino and Nathalie Frascaria-LacosteAnn. For. Sci., 65 4 (2008) 403DOI: https://doi.org/10.1051/forest:2008014