TY  - BOOK
AU  - Ludvigson, Sydney C
AU  - Ma, Sai 
AU  - Ng, Serena
ED  - National Bureau of Economic Research
TI  - Uncertainty and business cycles: Exogenous impulse or endogenous response ? 
T2  - NBER Working Paper
PY  - 2015///
CY  - Cambridge
PB  - NBER
KW  - NBERWP 21803
KW  - E16223.pdf
UR  - http://elibrary.igidr.ac.in/e-library/working papers/NBER/2015/E16223.pdf
ER  -