@article{CMJ_2009__59_1_a5,
     author = {Lashkaripour, R. and Foroutannia, D.},
     title = {Lower bounds for matrices on block weighted sequence spaces. {I}},
     journal = {Czechoslovak Mathematical Journal},
     pages = {81--94},
     publisher = {mathdoc},
     volume = {59},
     number = {1},
     year = {2009},
     mrnumber = {2486617},
     zbl = {1217.47065},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMJ_2009__59_1_a5/}
}