TY  - RPRT
A1  - Cheah, B.C.
T1  - Clustering standard errors or modeling multilevel data?
Y1  - 2009
UR  - https://statmodeling.stat.columbia.edu/wp-content/uploads/2009/08/RevisitMoulton_21.pdf
PB  - Columbia University
CY  - New York

ER  -