uml - What can be an Actor in a subsystem sequence diagram? - Software Engineering Stack Exchange
Sequence diagrams Chapter 5 Sommerville. Sequence diagrams Sequence diagrams are part of the UML and are used to model the interactions between the actors. - ppt download
A sequence diagram of the Register use case. | Download Scientific Diagram
A Sequence Diagram with multi-actor | Download Scientific Diagram
8.4 Sequence Diagram – Wachemo University e-Learning Platform