Widespread, episodic decline of alder (Alnus) during the medieval period in the boreal forest of EuropeStivrinš, Normunds; Buchan, Michelle S.; Disbrey, Helena R.; Veski, SiimJournal of quaternary science2017 / p. 903-907 : ill https://doi.org/10.1002/jqs.2984 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS