@article{10_4064_am_18_4_571_576,
     author = {S. Trybu{\l}a and M. Wilczy\'nski},
     title = {Estimation under sampling from a finite population},
     journal = {Applicationes Mathematicae},
     pages = {571--576},
     publisher = {mathdoc},
     volume = {18},
     number = {4},
     year = {1983},
     doi = {10.4064/am-18-4-571-576},
     zbl = {0603.62062},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/am-18-4-571-576/}
}