Multistage Model Transformations in Software Product Lines. - Sofia Azevedo; Ricardo Jorge Machado 001; Dirk Muthig (ICSEA, 2009)

Refinement of Software Product Line Architectures through Recursive Modeling Techniques. - Sofia Azevedo; Ricardo Jorge Machado 001; Dirk Muthig; Hugo Ribeiro (OTM Workshops, 2009)

The UML «include» Relationship and the Functional Refinement of Use Cases. - Sofia Azevedo; Ricardo Jorge Machado 001; Alexandre Bragança; Hugo Ribeiro (EUROMICRO-SEAA, 2010)

Support for variability in use case modeling with refinement. - Sofia Azevedo; Ricardo J. Machado 001; Alexandre Bragança; Hugo Ribeiro (MOMPES, 2010)

The UML "extend" Relationship as Support for Software Variability. - Sofia Azevedo; Ricardo Jorge Machado 001; Alexandre Bragança; Hugo Ribeiro (SPLC, 2010)

Systematic Use of Software Development Patterns through a Multilevel and Multistage Classification. - Sofia Azevedo; Ricardo Jorge Machado 001; Alexandre Bragança; Hugo Ribeiro (Model-Driven Domain Analysis and Software Development, 2011)

On the Use of Model Transformations for the Automation of the 4SRS Transition Method. - Sofia Azevedo; Ricardo Jorge Machado 001; Rita Suzana Pitangueira Maciel (CAiSE Workshops, 2012)

On the refinement of use case models with variability support. - Sofia Azevedo; Ricardo Jorge Machado 001; Alexandre Bragança; Hugo Ribeiro (Innov. Syst. Softw. Eng., 2012)

Refinement and variability techniques in model transformation of software requirements - Sofia Azevedo (2015)

Variability Aspects at a Textual Requirements Specification Level. - Alberto Rodrigues da Silva; João Costa Fernandes; Sofia Azevedo (RE Workshops, 2017)