@article{LJM_2007_27_a1,
     author = {D. Foroutannia and R. Lashkaripour},
     title = {Lower bounds for summability matrices on weighted sequence spaces},
     journal = {Lobachevskii journal of mathematics},
     pages = {15--29},
     publisher = {mathdoc},
     volume = {27},
     year = {2007},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/LJM_2007_27_a1/}
}