@article{MAN_1931__104_159493,
     author = {N. Achyeser},
     title = {\"Uber ein {Tschebyscheffsches} {Extremumproblem}},
     journal = {Mathematische Annalen},
     pages = {739--744},
     publisher = {mathdoc},
     volume = {104},
     year = {1931},
     zbl = {57.0414.03},
     url = {http://geodesic.mathdoc.fr/item/MAN_1931__104_159493/}
}