d SJ3-2 st0039. Testing for serial correlation in linear ... d Testing for serial correlation in linear panel-data models d by David M. Drukker, Stata Corporation d Support: ddrukker@@stata.com d After installation, type help ^xtserial^ f st0039/xtserial.ado f st0039/xtserial.do f st0039/xtserial.hlp