@article{AMI_2012_39_a5,
     author = {Istv\'an Fazekas and Tibor T\'om\'acs},
     title = {On weighted averages of double sequences},
     journal = {Annales mathematicae et informaticae},
     pages = {71--81},
     publisher = {mathdoc},
     volume = {39},
     year = {2012},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AMI_2012_39_a5/}
}