Checklist for Justifying Free Software
http://www.freesoftwaremagazine.com/free_issues/issue_01/engineers_checklist/

Spence, Malcolm D.
Free Software Magazine
2005

Abstract:

In a few years viewing source code within the major components of software infrastructure will probably be a routine way of doing business. In the meantime it seems that the only reason managers want free software is because it is free (as in free of costs). That's not a good reason in itself: in the long run there are compelling reasons that robust, mission critical infrastructure software should be made free software.