There are new articles on the opensource.mit site that deal specifically with Open Source Software. The MIT site is great for articles and they post new ones every month or so. Check out the rest of their offerings.

Open Source vs Closed Source Software: Public Policies in the
Software Market

Abstract:
This paper analyses the impact of public policies supporting open
source software (OSS). Users can be divided between those who know
about the existence of OSS, the ”informed” adopters, and the
”uninformed” ones; the presence of uniformed users yields to market
failures that justify government intervention. We study three policies:
i) mandatory adoption, when government forces public agencies, schools
and universities to adopt OSS, ii) information campaign, when the
government informs the uninformed users about the existence and the
characteristics of OSS and, iii) subsidisation, when consumers are payed
a subsidy when adopting OSS. We show that the second policy enhances
welfare, the third is always welfare decreasing while mandatory adoption
can be either good or bad for society depending on the number of
informed and uninformed adopters. We extend the model to the presence
of network effects and we show that strong externalities require
”drastic” policies.

Understanding Free/Open Source Software Evolution: Applying, Breaking and Rethinking the Laws of Software Evolution

Abstract:
This study examines whether the evolution of open source software
conforms to the laws of software evolution that have been in development
for more than 30 years. Given evidence and data that may not conform, it
becomes necessary to consider how the laws and theory might be revamped
to better account for the data that characterizes both conventional
closed source software and F/OSS system evolution.

and for the gaming folks
Free/Open Source Software Development Practices in the Computer Game Community

Abstract:
This paper provides results from empirical studies that begin to outline
some of the processes and practices for how F/OSS systems are developed
in different communities. Examples drawn from the world of computer
games reveal how processes and practices for the development and
propagation of F/OSS technology are intertwined and mutually situated to
benefit those motivated to use and contribute to it.