TY  - JOUR
AU  - Ruckle, William H.
TI  - On the Classification of Biorthogonal Sequences
JO  - Canadian journal of mathematics
PY  - 1974
SP  - 721
EP  - 733
VL  - 26
IS  - 3
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CJM-1974-067-0/
DO  - 10.4153/CJM-1974-067-0
ID  - 10_4153_CJM_1974_067_0
ER  -