T. Ludwig, R. Siano, and A. V. Andreev, “Habitat selection of sympatric Siberian Grouse and Hazel Grouse in natural and exploited forests of the lower Amur region: In Memoriam Alexander (Sasha) V. Andreev”, Ornis Fenn, vol. 98, no. 4, pp. 142–161, Jan. 2022.