@article{GDZPPN002460122,
title = {Approximately Optimum Two-Stage Sampling Plans.},
journal = {Metrika},
volume = {32},
year = {1985},
pages = {293-314},
zbl = {0586.62170},
url = {http://dml.mathdoc.fr/item/GDZPPN002460122}
}
Arnold, B.F. Approximately Optimum Two-Stage Sampling Plans.. Metrika, Tome 32 (1985) pp. 293-314. http://gdmltest.u-ga.fr/item/GDZPPN002460122/