GREGERSEN, F.; GREGERSEN, H. Ongoing population decline and range contraction in Norwegian forest grouse. Ornis Norvegica, [S. l.], v. 32, p. 179–189, 2009. DOI: 10.15845/on.v32i0.163. Disponível em: https://boap.uib.no/index.php/ornis/article/view/163. Acesso em: 26 apr. 2024.