@article{MZ_1971__120_171538,
     author = {Paul Schaefer},
     title = {Matrix {Transormations} of {Almost} {Convergent} {Sequenes.} {II.}},
     journal = {Mathematische Zeitschrift},
     pages = {363--368},
     publisher = {mathdoc},
     volume = {120},
     year = {1971},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/MZ_1971__120_171538/}
}