ANDERSSON, R. Covariation between systematic counts and spontaneous reporting of staging waders at the Getterön Nature Reserve, southwestern Sweden. Ornis Svecica, Lund, Sweden, v. 31, p. 34–43, 2021. DOI: 10.34080/os.v31.22270. Disponível em: https://journals.lub.lu.se/os/article/view/22270. Acesso em: 17 may. 2022.