TY  - BOOK
AU  - Weiermair Klaus
AU  -  Perlman Mark
TI  - Studies in economic rationality: X-Efficiency exam   
SN  - 0472101544
U1  - XjN22L, N0 
PY  - 1990///
CY  - Ann Arbor 
PB  - University of Michigan Press      
N1  - Bibliography chapterwise
ER  -