@article{10_21136_MB_1998_125967,
     author = {{\L}enski, W{\l}odzimierz and Topolewska, Maria},
     title = {On the rate of strong summability of double {Fourier} series},
     journal = {Mathematica Bohemica},
     pages = {337--363},
     publisher = {mathdoc},
     volume = {123},
     number = {4},
     year = {1998},
     doi = {10.21136/MB.1998.125967},
     mrnumber = {1667108},
     zbl = {0936.42007},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/MB.1998.125967/}
}