@article{02042852,
title = {A generalization of Moore-Penrose biorthogonal systems.},
journal = {ELA. The Electronic Journal of Linear Algebra [electronic only]},
volume = {10},
year = {2003},
pages = {146-154},
zbl = {1043.15001},
language = {en},
url = {http://dml.mathdoc.fr/item/02042852}
}
Matsuura, Masaya. A generalization of Moore-Penrose biorthogonal systems.. ELA. The Electronic Journal of Linear Algebra [electronic only], Tome 10 (2003) pp. 146-154. http://gdmltest.u-ga.fr/item/02042852/