Reference:
Visualizing use case sets as BPMN processes (Lubke, Daniel, Schneider, Kurt, and Weidlich, Matthias), In 2008 Requirements Engineering Visualization, 2008.
Bibtex Entry:
@inproceedings{lubke2008visualizing,
title={Visualizing use case sets as BPMN processes},
author={Lubke, Daniel and Schneider, Kurt and Weidlich, Matthias},
booktitle={2008 Requirements Engineering Visualization},
pages={21--25},
year={2008},
organization={IEEE},
pdf = {https://www.informatik.hu-berlin.de/%7eweidlima/pubs/lubke_rev_2008_visualizing_use_case.pdf}
}