TY - JOUR T1 - Testing refinements of state-based formal specifications JO - Software Testing Verification and Reliability PY - 1999/01/01 AU - Derrick J AU - Boiten E ED - DO - DOI: 10.1002/(SICI)1099-1689(199903)9:1<27::AID-STVR172 VL - 9 IS - 1 SP - 27 EP - 50 Y2 - 2024/10/23 ER -