Protocol for a Systematic Mapping Study on Collaborative Model-Driven Software Engineering Mirco Franzago, Ivano Malavolta, Henry Muccini, Davide Di Ruscio Technical Report TRCS 001/2016 The Technical Reports of the DISIM at the University of L'Aquila are available online on the portal http://www.disim.univaq.it/ Authors are reachable via email and all the addresses can be found on the same site. Dipartimento di Ingegneria e Scienze dell’Informazione e Matematica Università degli Studi dell'Aquila Via Vetoio Loc. Coppito I-67010 L'Aquila, Italy http://www.disim.univaq.it Technical Report TRCS Series arXiv:1611.02619v1 [cs.SE] 8 Nov 2016