George Spanoudakis Andrea Zisman Elena Pérez-Miñana Paul Krause Rule-based generation of requirements traceability relations. 105-127 2004 72 Journal of Systems and Software 2 http://dx.doi.org/10.1016/S0164-1212(03)00242-5 db/journals/jss/jss72.html#SpanoudakisZPK04