Ojanen, U., O. Rätti, P. Adler, K. Kuusela, B. Malmqvist, and P. Helle. “Blood Feeding by Black Flies (Diptera: Simuliidae) on Black Grouse (<i>Tetrao tetrix</I>) in Finland”. Entomologica Fennica, vol. 13, no. 3, Sept. 2002, pp. 153–158, doi:10.33338/ef.84155.