The Seven Samurai of Systems Engineering
Martin, J. 2004. "The Seven Samurai of Systems Engineering: Dealing with the Complexity of 7 Interrelated Systems." Proceedings of the International Council on Systems Engineering (INCOSE) International Symposium, 2004, Toulouse, France.
This source is considered a primary reference for the Product Systems Engineering article.
This book defines the seven fundamental systems involved in any situation: context system, intervention system, realization system, deployed system, collaborating system, sustainment system, and competing system. The fifteen key relationships between these seven systems are described. This "seven samurai" construct provides a framework to facilitate systems thinking about any problematic situation.