@article{SM_1967_3_4_a4,
     author = {E. M. Nikishin},
     title = {Systems of absolute convergence},
     journal = {Sbornik. Mathematics},
     pages = {499--507},
     publisher = {mathdoc},
     volume = {3},
     number = {4},
     year = {1967},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1967_3_4_a4/}
}