@article{10_1007_s10587_012_0031_8,
     author = {Lashkaripour, Rahmatollah and Talebi, Gholomraza},
     title = {Lower bound and upper bound of operators on block weighted sequence spaces},
     journal = {Czechoslovak Mathematical Journal},
     pages = {293--304},
     publisher = {mathdoc},
     volume = {62},
     number = {2},
     year = {2012},
     doi = {10.1007/s10587-012-0031-8},
     mrnumber = {2990178},
     zbl = {1265.26074},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.1007/s10587-012-0031-8/}
}