@article{IM2_1989_33_2_a7,
     author = {A. M. Sedletskii},
     title = {Projection from the spaces $E^p$ on a~convex polygon onto subspaces of periodic functions},
     journal = {Izvestiya. Mathematics },
     pages = {373--390},
     publisher = {mathdoc},
     volume = {33},
     number = {2},
     year = {1989},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1989_33_2_a7/}
}