Voir la notice de l'article provenant de la source Math-Net.Ru
@article{MZM_1980_28_6_a5, author = {V. I. Ivanov and V. A. Yudin}, title = {Trigonometric system in $L_p$, $0<p<1$}, journal = {Matemati\v{c}eskie zametki}, pages = {859--868}, publisher = {mathdoc}, volume = {28}, number = {6}, year = {1980}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1980_28_6_a5/} }
V. I. Ivanov; V. A. Yudin. Trigonometric system in $L_p$, $0