@article{MZM_2007_82_3_a7,
     author = {J. J. Ma\v{c}ys},
     title = {On {Euler's} {Hypothetical} {Proof}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {395--400},
     publisher = {mathdoc},
     volume = {82},
     number = {3},
     year = {2007},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2007_82_3_a7/}
}