CHADYŠAS, Viktoras; KRAPAVICKAITĖ, Danutė. Estimation of the current population total for a four-phase sampling design. Nonlinear Analysis: Modelling and Control, [S. l.], v. 21, n. 2, p. 241–260, 2016. DOI: 10.15388/NA.2016.2.7. Disponível em: https://www.journals.vu.lt/nonlinear-analysis/article/view/13490.. Acesso em: 30 apr. 2024.