SINGH, Garib Nath; KHALID, Mohd. Exponential chain dual to ratio and regression type estimators of population mean in two-phase sampling. Statistica, [S. l.], v. 75, n. 4, p. 379–389, 2015. DOI: 10.6092/issn.1973-2201/5423. Disponível em: https://rivista-statistica.unibo.it/article/view/5423. Acesso em: 22 jul. 2024.