TY  - DATA
AU  - Chalkley, Roger
TI  - Basic global relative invariants for homogeneous linear differential equations 
T2  - Memoirs of the American Mathematical Society, 
SN  - 9781470403379 (online)
PY  - 2002///
CY  - Providence, R.I.
PB  - American Mathematical Society
UR  - http://www.ams.org/memo/0744
ER  -