@article{TM_1987_180_a113,
     author = {V. I. Rukasov},
     title = {Approximation of continuous periodic functions by linear means of their {Fourier} series},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {187--188},
     year = {1987},
     volume = {180},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TM_1987_180_a113/}
}