@article{DAN_1970_194_3_a1,
     author = {E. A. Bredikhina},
     title = {The optimality of tests for the convergence of the {Fourier} series of almost periodic functions},
     journal = {Doklady Akademii Nauk},
     pages = {489--491},
     publisher = {mathdoc},
     volume = {194},
     number = {3},
     year = {1970},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1970_194_3_a1/}
}