L. Forsström (1990). «Occurrence of larch (Larix) in Fennoscandia during the Eemian interglacial and the Brørup interstadial according to pollen analytical data». Boreas. 19 (3): 241–248. ISSN1502-3885. doi:10.1111/j.1502-3885.1990.tb00449.x.
L. Forsström (1990). «Occurrence of larch (Larix) in Fennoscandia during the Eemian interglacial and the Brørup interstadial according to pollen analytical data». Boreas. 19 (3): 241–248. ISSN1502-3885. doi:10.1111/j.1502-3885.1990.tb00449.x.