@article{10_4064_aa108_1_7,
     author = {A. Schinzel and M. Ska{\l}ba},
     title = {On power residues},
     journal = {Acta Arithmetica},
     pages = {77--94},
     publisher = {mathdoc},
     volume = {108},
     number = {1},
     year = {2003},
     doi = {10.4064/aa108-1-7},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa108-1-7/}
}