@article{EMJ_2020_11_4_a6,
     author = {B. V. Vynnyts'kyi and R. V. Khats' and I. B. Sheparovich},
     title = {Unconditional bases of systems of {Bessel} functions},
     journal = {Eurasian mathematical journal},
     pages = {76--86},
     publisher = {mathdoc},
     volume = {11},
     number = {4},
     year = {2020},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EMJ_2020_11_4_a6/}
}