Páll-Gergely, B., Kyrö, K., Lehvävirta, S., & Vilisics, F. (2015). Green roofs provide habitat for the rare snail (Mollusca, Gastropoda) species Pseudotrichia rubiginosa and Succinella oblonga in Finland. Memoranda Societatis pro Fauna et Flora Fennica, 90. Noudettu osoitteesta https://journal.fi/msff/article/view/48569