@article{TRSPY_1983_164_a14,
     author = {V. T. Shevaldin},
     title = {Some problems of extremal interpolation in the mean for linear differential operators},
     journal = {Informatics and Automation},
     pages = {203--240},
     publisher = {mathdoc},
     volume = {164},
     year = {1983},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_1983_164_a14/}
}