journal£ºThe Stata Journal: Promoting communications on statistics and Stata
Authors£ºDavid Roodman
Published date£º2009-3-
DOI£º10.1177/1536867x0900900106
PDF link£ºhttp://journals.sagepub.com/doi/pdf/10.1177/1536867X0900900106
Article link£ºhttp://dx.doi.org/10.1177/1536867x0900900106
Article Source£ºSAGE Publications¡£
Remark£º |