Seasonal accumulation of ultraviolet-B screening pigments in needles of Norway spruce (Picea abies [L.] Karst.). - Fischbach,R..J..; Kossmann,B..; Panten,H..; Steinbrecher,R..; Heller,W..; Seidlitz,H..K..; Sandermann,H..; Hertkorn,N..; Schnitzler,J.-P.. (Plant, Cell and Environment, 1999)