KUMAR TIWARI, K.; KUMAR, P. An Efficient Class of Estimators for Finite Population Mean Using Auxiliary Variable. Thailand Statistician, [S. l.], v. 20, n. 4, p. 754–765, 2022. Disponível em: https://ph02.tci-thaijo.org/index.php/thaistat/article/view/247458. Acesso em: 16 sep. 2026.