Model-Based Systems Engineering
Wymore, A.W. 1993. Model-Based Systems Engineering. Boca Raton, FL, USA: CRC Press, Inc.
This source is considered a primary reference for the following articles:
This book provides foundational material for the subject of MBSE and a theory for modeling. It provides a key reference for future work in developing theories and formalisms on this topic. It is widely referenced among the systems modeling community.