1. The Nonlinear Accelerator and the Persistence of Business Cycles
2. R. G. D. Allen. Macro-Economic Theory. A Mathematical Treatment (Macmillan, London, 1968), pp. 379–382.
3. The Method of Equivalent Linearization
4. Goodwin's Nonlinear Theory of the Business Cycle: An Electro-Analog Solution
5. A. O. Antonova, S. N. Reznik, and M. D. Todorov, “Analysis of types of oscillations in Goodwin’s model of business cycle,” in Application of Mathematics in Technical and Natural Sciences (AMiTaNS’10), AIP Conference Proceedings Vol. 1301, edited by M. D. Todorov and C.I. Christov (American Institute of Physics, Melville, NY, 2010), pp. 188–95.