@article{DAN_1961_139_5_a3,
     author = {I. A. Grigor'eva},
     title = {The form of extremal functions of a certain class, of least deviation from zero with several linear relations in the coefficients},
     journal = {Doklady Akademii Nauk},
     pages = {1044--1047},
     publisher = {mathdoc},
     volume = {139},
     number = {5},
     year = {1961},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1961_139_5_a3/}
}