1. Safecharts: Safer and More Structured Statecharts;Armstrong;Dependable Computing Systems Centre TR/95/7, Version 2,1996
2. Definition of Ω1;Armstrong;Dependable Computing Systems Centre TR/96/11, Version 1,1996
3. Definition of Ω2;Armstrong;Dependable Computing Systems Centre TN/96/24, Version 1,1996
4. Definition and Proofs of Ω1.1 and ω1;Armstrong;Dependable Computing Systems Centre TR/97/3, Draft,1997
5. Definition of ΩADL;Armstrong;Dependable Computing Systems Centre TR/97/4, Draft,1997