1.
Holm S. Regeneration of Betula pendula and B. pubescens coll. above and below the natural altitudinal distribution limit of B. pendula in south-east Norway. OM [Internet]. 1Dec.1993 [cited 19Apr.2024];2(1-2):1-. Available from: https://om.vuvb.uniza.sk/index.php/OM/article/view/24