Nakatsubo T., Fujiyoshi M., Yoshitake S., Koizumi H., & Uchida M. (2010). Colonization of the polar willow Salix polaris on the early stage of succession after glacier retreat in the High Arctic, Ny-Ålesund, Svalbard. Polar Research, 29(3), 285-390. https://doi.org/10.3402/polar.v29i3.6078