TY  - BOOK
AU  - Buchi, J. Richard and Siefkes, Dirk
AU  - Siefkes, Dirk ; jt. auth.
TI  - The monadic second order theory of countable ordinals
T2  - Lecture notes in Mathematics
U1  - 511.3 
PY  - 1973///
CY  - Berlin
PB  - Springer-Verlag
N1  - "Decidable theories-II"
ER  -