@article{GDZPPN002457520,
title = {The Problem of Optimum Stratification and Allocation with q = n N \> 0},
journal = {Metrika},
volume = {28},
year = {1981},
pages = {179-190},
zbl = {0475.62009},
url = {http://dml.mathdoc.fr/item/GDZPPN002457520}
}
Schneeberger, H. The Problem of Optimum Stratification and Allocation with q = n N > 0. Metrika, Tome 28 (1981) pp. 179-190. http://gdmltest.u-ga.fr/item/GDZPPN002457520/