TY  - JOUR
AU  - Tam, Tin-Yau
TI  - An extension of a result of Lewis
JO  - The electronic journal of linear algebra
PY  - 1999
SP  - 1
EP  - 10
VL  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/ELA_1999__5__a7/
LA  - en
ID  - ELA_1999__5__a7
ER  -