The concern is a form of association (as a rule, multi-sectoral) of independent companies through a system of participation in capital, financial links, contracts of community of interests, personal union, patent-license agreements, close industrial cooperation.
The company should be large and have a complex structure to perform a large number of diverse operations for the development, production, and delivery of a complex product to the customers.
The company should be small and have a simple structure in order to:
Ivanova T., Prikhodko V. Theory of Organization. M: Knorus, 2010.