@article{10_14708_ma_v8i16_1471,
     author = {Piotr Hellmann},
     title = {Bias of certain tests for the two-sample problem},
     journal = {Mathematica Applicanda},
     pages = { 107--114},
     publisher = {mathdoc},
     volume = {8},
     number = {16},
     year = {1980},
     doi = {10.14708/ma.v8i16.1471},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/ma.v8i16.1471/}
}