@misc{,
  author = "3. Roberto E. Lopez-Herrejon, Sven Apel",
  booktitle = "Fundamental Approaches to Software Engineering (FASE 2007) at European Conference on Theory and Practice of Software, (ETAPS 2007). ",
  location = "Braga, Portugal",
  month = "March",
  title = "Measuring and Characterizing Crosscutting in Aspect-Based Programs: Basic Metrics and Case Studies",
  year = "2007",
}