Our paper “Tunning Github for SPL development: branching model and repository operations for product engineers” (Leticia Montalvillo and Oscar DÃaz) has been accepted at SPLC’15. This year the 19th International Software Product Line Conference will be held in Nashville, TN USA (20-24 July 2015).
Take a look at https://www.researchgate.net/publication/280566698_Tuning_Github_for_SPL_development_branching_models_and_repository_operations_for_product_engineers