Alencar, Antonio, 		Alcemar, Rafael, 		Schmitz, Eber, 		Correa, Alexandre, AND 		Dias, Angélica.
" The Impact of Non-Essential Software Units and Flexible Precedence Relationships on the Value of Software Projects" <em>Proceedings of the Brazilian Symposium on Information Systems (SBSI)</em> [Online], (23 May 2011)