Piirainen, M., Laaka-Lindberg, S., Salo, P., & Velmala, S. (2020). Accessions to the Botanical Museum of the Finnish Museum of Natural History, University of Helsinki, in 2019. Memoranda Societatis pro Fauna et Flora Fennica, 96, 79–82. Noudettu osoitteesta https://journal.fi/msff/article/view/101283