Egidio Astesiano

Gianna Reggio, Maura Cerioli, Egidio Astesiano: Towards a Rigorous Semantics of UML Supporting Its Multiview Approach, Fundamental Approaches to Software Engineering, 4th International Conference, FASE 2001, 2001, (BibTeX entry).
Egidio Astesiano: UML as Heterogeneous Multiview Notation Strategies for a Formal Foundation, OOPSLA'98 Workshop on Formalizing UML. Why? How?, 1998, (BibTeX entry).
Egidio Astesiano, Maura Cerioli, Gianna Reggio: Plugging Data Constructs into Paradigm-Specific Languages: Towards an Application to UML, Springer, 2000, (BibTeX entry).
Gianna Reggio, Egidio Astesiano, Christine Choppy, Heinrich Hussmann: Analysing UML Active Classes and Associated State Machines -- A Lightweight Formal Approach, Springer, 2000, (BibTeX entry).

dblp: Computer Science Bibliography (University of Trier, Germany). (Note that this does not always work due to different naming schemes.)