An interesting talk from Markus Volter at  JAOO'07 about how to manage variability in a Software Product Line. The Product Line Engineering blog also has an interesting post with a clarificaton on the notion of version and variant.

Software Product Lines (SPL) are a way of managing the development process focusing on planned reuse thru a large number of products (a product family). The Software Engineering Institute (SEI) defines a SPL as (emphasis mine): A Software Product Line is a set of software-intensive systemssharing a common, managed set of features ...

The Journal of the Brazilian Computer society has published a new issue dedicated to software reuse with  interesting papers on Software Product Lines; the papers can be downloaded here . This info came from World of Reuse wich is a blog associated with a Brazilian company called RiSE (Reuse in Software Engineering). You ...