@article{PIM2_1984__35(49)_117967,
     author = {Beri\v{s}a, M.},
     title = {Necessary conditions for the {Fourier} coefficients of periodic functions to belong to {B(p,} k, )-classes of {Besov} type.},
     journal = {Publications de l 'Institut Math\'ematique. Nouvelle S\'erie},
     pages = {87},
     publisher = {mathdoc},
     volume = {35(49)},
     year = {1984},
     zbl = {0605.42002},
     language = {en},
     url = {https://geodesic-test.mathdoc.fr/item/PIM2_1984__35(49)_117967/}
}