M. Thomasset, Jf. Fernandez-Manjarres, G.C Douglas, P. Bertolino, Nathalie Frascaria-Lacoste, et al.. Assignment testing reveals multiple introduced source populations including potential ash hybrids (Fraxinus excelsior x F. angustifolia) in Ireland.
European Journal of Forest Research, Springer Verlag, 2013, 132, pp.195-209.
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