TY  - DATA
AU  - Pincus, Joel D.
AU  - Zhou, Shaojie,
TI  - Principal currents for a pair of unitary operators 
T2  - Memoirs of the American Mathematical Society, 
SN  - 9781470400996 (online)
PY  - 1994///
CY  - Providence, R.I.
PB  - American Mathematical Society
UR  - http://www.ams.org/memo/0522
ER  -