Timmermann, H. R., G. D. Racey, and R. Gollat. 1990. “MOOSE CRATERING FOR EQUISETUM IN EARLY WINTER”. Alces: A Journal Devoted to the Biology and Management of Moose 26 (January):86-90. https://www.alcesjournal.org/index.php/alces/article/view/1157.