@article{1250131727,
author = {Koopmans, L.H. and Qualls, Clifford},
title = {Fixed length confidence intervals for parameters of the normal distribution based on two-stage sampling procedures},
journal = {Rocky Mountain J. Math.},
volume = {1},
number = {4},
year = {1971},
pages = { 587-602},
language = {en},
url = {http://dml.mathdoc.fr/item/1250131727}
}
Koopmans, L.H.; Qualls, Clifford. Fixed length confidence intervals for parameters of the normal distribution based on two-stage sampling procedures. Rocky Mountain J. Math., Tome 1 (1971) no. 4, pp. 587-602. http://gdmltest.u-ga.fr/item/1250131727/