Canopy nitrogen application effects on Quercus petraea L. and Fagus sylvatica L. ring width and wood density. - Minikaev, Daniel; Ventura, Maurizio; Tonon, Giustino; Uhl, Enno; Ravaioli, Dario; Jankowski, Przemysław A.; Wellstein, Camilla (European Journal of Forest Research, 2025)