JÓZEFOWSKI, Tomasz; SZYMKOWIAK , Marcin. Using a spree estimator to estimate the number of unemployed people across subregions. Studia Oeconomica Posnaniensia, Poznan, Polska, v. 1, n. 10, p. s. 120–135, 2013. DOI: 10.18559/b2pdaa63. Disponível em: https://journals.ue.poznan.pl/soep/article/view/3329. Acesso em: 3 sep. 2026.