@article{MZM_2004_76_3_a7,
     author = {M. Mignotte},
     title = {A~New {Proof} of {Ko} {Chao's} {Theorem}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {384--395},
     publisher = {mathdoc},
     volume = {76},
     number = {3},
     year = {2004},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2004_76_3_a7/}
}