@article{MZ_1982__180_173192,
     author = {Andr\'es Reyes},
     title = {Some {Properties} of a {Regular} {Sequence} in {Hilbert} {Space.}},
     journal = {Mathematische Zeitschrift},
     pages = {331--334},
     publisher = {mathdoc},
     volume = {180},
     year = {1982},
     zbl = {0471.46015},
     url = {http://geodesic.mathdoc.fr/item/MZ_1982__180_173192/}
}