@article{VMJ_2020_22_3_a6,
     author = {K. P. Isaev and R. S. Yulmukhametov},
     title = {Unconditional bases in radial {Hilbert} spaces},
     journal = {Vladikavkazskij matemati\v{c}eskij \v{z}urnal},
     pages = {85--99},
     year = {2020},
     volume = {22},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMJ_2020_22_3_a6/}
}