About...
Lean Systems Consulting is a engineering firm that specializes in management systems, like the Toyota Production System. We help companies by strengthening their existing improvement methods and offer techniques that are consistent with their culture. We use a systems approach to help managers and leaders to apply organizational development and industrial engineering simultaneously.

The company was founded by Dr. Phil Marksberry, when he started his education and consulting career in 2006 at the University of Kentucky. One of his first contributions to the field of Lean Manufacturing was a 7-year study of the Toyota Production System in the context of organizational behavior, management science, systems theory and industrial engineering. The Modern Theory of the Toyota Production System is the first of its kind to use systems theory to study how the pieces of the Toyota Production System (TPS) work together to achieve a much needed balance between the "Technical" and "Social" elements. The book gives credit to many of the earlier contributors to the field of Industrial Engineering, Organizational Development and Systems Theory. 

https://www.amazon.com/Modern-Theory-Toyota-Production-System/dp/1466556749