TY  - BOOK
AU  - Pincus J.D.
AU  - Zhou Sh
TI  - Principal Currnets for a Pair of Unitary Operators
U1  - MAMS 
PY  - 1994///
CY  - Providence
PB  - Amer. Math. Soc.
N1  - Memoirs of the Amer. Math. Soc., Vol. 109, N 522
ER  -