“The matrix-structure concept is a balance between two or more bases of grouping, for example functional with market (or for that matter, one kind of market with another, say, regional with product). This is accomplished by the creation of a dual-authority structure–two or more managers, units, or individuals are made jointly and equally responsible for the same decisions.” – Nonaka, Ikujirō, and Hirotaka Takeuchi. The knowledge-creating company : how Japanese companies create the dynamics of innovation. New York: Oxford University Press, 1995.