@article{10_4064_cm_4_2_232_238,
     author = {I. Ko\'zniewska},
     title = {Comparison of the efficiency of drawing samples with and without replacement when the variance of the general population is unknown},
     journal = {Colloquium Mathematicum},
     pages = {232--238},
     publisher = {mathdoc},
     volume = {4},
     number = {2},
     year = {1956},
     doi = {10.4064/cm-4-2-232-238},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-4-2-232-238/}
}