@article{IM2_2003_67_1_a5,
     author = {E. D. Livshits},
     title = {Stability of the operator of $\varepsilon$-projection to the set of splines in~$C[0,1]$},
     journal = {Izvestiya. Mathematics },
     pages = {91--119},
     publisher = {mathdoc},
     volume = {67},
     number = {1},
     year = {2003},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_2003_67_1_a5/}
}