Spring 2013 Spring 2013 Lecture notes.

My theory papers:

Papers referred to in the Reviewing Papers lecture (note that the software faults and the time studies papers have significant observational content; the software faults paper also has correlational aspects as well)

Here are couple of more papers that are primarily observational as well as correlational:

Here are some links to online journals that will have empirical software engineering papers. There are other journals and conference proceedings that are on line - here is where you search for Online Journals - search by title for Software Engineering

UT's Virtual Statistical Community - Useful Statistical Information
See especially their URLs for internet resources