@article{IM2_1998_62_4_a7,
     author = {V. T. Shevaldin},
     title = {Extremal interpolation in the mean with overlapping averaging intervals and $L$-splines},
     journal = {Izvestiya. Mathematics },
     pages = {833--856},
     publisher = {mathdoc},
     volume = {62},
     number = {4},
     year = {1998},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1998_62_4_a7/}
}