Bubenik, A. B., O. Williams, and H. R. Timmermann. “THE SIGNIFICANCE OF HOOVES IN MOOSE MANAGEMENT - A PRELIMINARY REPORT”. Alces: A Journal Devoted to the Biology and Management of Moose, vol. 14, Jan. 1978, pp. 209-26, https://alcesjournal.org/index.php/alces/article/view/1759.