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@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/} }
V. T. Shevaldin. Some problems of extremal interpolation in the mean for linear differential operators. Informatics and Automation, Orthogonal series and approximations of functions, Tome 164 (1983), pp. 203-240. http://geodesic.mathdoc.fr/item/TRSPY_1983_164_a14/