APA
Kleef R. v. e. a., National Bureau of Economic Research, . (2015). Improving risk equalization with constrained regression. Cambridge: NBER.
Chicago
Kleef Richard van et al, National Bureau of Economic Research, . 2015. Improving risk equalization with constrained regression. Cambridge: NBER.
Harvard
Kleef R. v. e. a., National Bureau of Economic Research, . (2015). Improving risk equalization with constrained regression. Cambridge: NBER.
MLA
Kleef Richard van et al, National Bureau of Economic Research, . Improving risk equalization with constrained regression. Cambridge: NBER. 2015.