Lifecycle Oriented Information Model to Support the Production Driven Product Validation. - Stilian Stanev; Waldemar Walla; Ramez Awad; Vitalis Bittel; Jivka Ovtcharova (DET, 2009)

Formal Method for Validation of Product Design through Knowledge Modelling. - Stilian Stanev; Jivka Ovtcharova; Waldemar Walla (KEOD, 2009)