xtcdf - now on SSC: Pesaran (2004, 2013) CD-test for cross sectional dependence - Statalist
Stata Online Training at DSS Princeton University
Ben Goldacre on Twitter: "If you're an awake Stata guru can you tell me why this code isn't working? Normal caveat: "Learn R" != correct answer http://t.co/MHtYOHITd0" / Twitter
Setting up
CD and Import - YouTube
14.75, Extra Recitation, Introduction to STATA 1 The diferent windows