Bibliographical references

FORRESTER, J.W. World Dynamics, Wright-Allen Press. Cambridge (Mass) 1971.

ARACIL, J. Y otros, Navarra 2000. Diputación Foral de Navarra 1980.

COYLE, R.G. Management System Dynamics. John Wiley & Sons. 1978. Pag 63.

FORRESTEP, J.W., "Market Growth as Influenced by Capital Investment", en Manageral Applications of System Dynamics, editdo por E.B. Roberts, MIT Press Cambrigde (Mass.) 1981, pag. 208.