By R. E. Bellman, J. D. Buell, R. E. Kalaba
Communications of the ACM,
April 1965,
Vol. 8 No. 4, Pages 227-228
10.1145/363831.364879
Comments
Systems in which variable time-lags are present are of common occurrence in biology. Variable flow rates are a common cause of these variable lags. At present no extensive body of knowledge exists concerning the effects which these variable lags can cause. Shown here is a method of reducing some differential-difference equations to ordinary differential equations which can then be studied numerically with ease. Subsequent study will deal with situations in which multiple-lags and lags dependent on the solution itself are present.
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