@article{00940802,
title = {Estimation of the integral modulus of smoothness of an even function of several variables with quasiconvex Fourier coefficients.},
journal = {Georgian Mathematical Journal},
volume = {3},
year = {1996},
pages = {379-400},
doi = {10.1007/BF02256726},
zbl = {0892.42004},
language = {en},
url = {http://dml.mathdoc.fr/item/00940802}
}
Tevzadze, T. Estimation of the integral modulus of smoothness of an even function of several variables with quasiconvex Fourier coefficients.. Georgian Mathematical Journal, Tome 3 (1996) pp. 379-400. doi : 10.1007/BF02256726. http://gdmltest.u-ga.fr/item/00940802/