@article{GMJ_1995__2_5_48548,
     author = {Nadibaidze, G.},
     title = {On the convergence and summability of series with respect to block-orthonormal systems.},
     journal = {Georgian Mathematical Journal},
     pages = {517--534},
     publisher = {mathdoc},
     volume = {2},
     number = {5},
     year = {1995},
     zbl = {0947.42020},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/GMJ_1995__2_5_48548/}
}