KHAN, H. .; KHAN, M. A. . NEW EXPONENTIAL-RATIO TYPE ESTIMATORS OF POPULATION MEAN IN TWO- PHASE SAMPLING USING NO INFORMATION CASE ON AUXILIARY VARIABLES. Journal of Reliability and Statistical Studies, [S. l.], v. 10, n. 02, p. 95–103, 2017. Disponível em: https://journals.riverpublishers.com/index.php/JRSS/article/view/20945. Acesso em: 14 may. 2024.