Lodenius, Martin, Matti Nummelin, and Esa Tulisalo. “Water Striders (Heteroptera, Gerridae) As Bioindicators of Heavy Metal Pollution”. Entomologica Fennica 8, no. 4 (December 1, 1997): 185–191. Accessed November 22, 2024. https://journal.fi/entomolfennica/article/view/83942.