Mauricio Alférez João Pedro Santos Ana Moreira Alessandro Garcia Uirá Kulesza João Araújo 0001 Vasco Amaral Multi-view Composition Language for Software Product Line Requirements. 103-122 2009 SLE http://dx.doi.org/10.1007/978-3-642-12107-4_8 conf/sle/2009 db/conf/sle/sle2009.html#AlferezSMGKAA09