@article{10_21136_CMJ_2018_0043_17,
     author = {K\'orus, P\'eter},
     title = {Necessary and sufficient conditions for the $L^1$-convergence of double {Fourier} series},
     journal = {Czechoslovak Mathematical Journal},
     pages = {987--996},
     publisher = {mathdoc},
     volume = {68},
     number = {4},
     year = {2018},
     doi = {10.21136/CMJ.2018.0043-17},
     mrnumber = {3881890},
     zbl = {07031691},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.2018.0043-17/}
}