@article{10_1017_S0017089503001691,
     author = {HOLUB, JAMES R.},
     title = {ON {A} {PROPERTY} {OF} {BASES} {IN} {A} {HILBERT} {SPACE}},
     journal = {Glasgow mathematical journal},
     pages = {177--180},
     year = {2004},
     volume = {46},
     number = {1},
     doi = {10.1017/S0017089503001691},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089503001691/}
}