References:

• Mohapatra, P, K, J., Mandal, p and Bora, M, C. (1994), Introduction to System Dynamics Modeling,University Press(India).
• William Braun(2002), The System Archetypes
• John D. Sterman (2000), Business Dynamics: Systems Thinking and Modeling for a Complex World,McGraw-Hill/Irwin (February 23, 2000).