Ludwig, Tobias, Ralf Siano, ja Alexander V. Andreev. 2022. ”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 Fennica 98 (4):142-61. https://doi.org/10.51812/of.113446.