Piirainen, M., Laaka-Lindberg, S., Salo, P., & Velmala, S. (2019). Accessions to the Botanical Museum of the Finnish Museum of Natural History, University of Helsinki, in 2018. Memoranda Societatis pro Fauna et Flora Fennica, 95, 134–137. Noudettu osoitteesta https://journal.fi/msff/article/view/88653