Seven sorts of programs. - Roger S. Scowen; Zbigniew Ciechanowicz (ACM SIGPLAN Notices, 1982)

The 'Completeness' of the Pascal Test Suite. - Zbigniew Ciechanowicz; A. C. De Weever (Softw. Pract. Exp., 1984)

Risk analysis: requirements, conflicts and problems. - Zbigniew Ciechanowicz (Comput. Secur., 1997)

Dealing with Uncertainties in Risk Analysis Using Belief Functions. - Sungbaek Cho; Zbigniew Ciechanowicz (ICICS, 2001)

Checklist-Based Risk Analysis with Evidential Reasoning. - Sungbaek Cho; Zbigniew Ciechanowicz (SEC, 2001)