TY  - BOOK
TI  - Periodic differential operators 
SN  - 9783034805278 (alk. paper) | 3034805276 (alk. paper)
PY  - 2013///
CY  - New York
PB  - Birkhauser
UR  - http://www.columbia.edu/cgi-bin/cul/resolve?clio10191774
ER  -