A general approach for obtaining transient response by the use of a digital computer
P. E. Lego, T. W. Sze · Transactions of the American Institute of Electrical Engineers Part I Communication and Electronics · 1959
Obtaining the transient response of linear systems is fundamentally a problem involving the solution of the differential equations which describe the behavior of the system. These equations can be solved by the use of classical methods, operational calculus, or by applying the Laplace transformation.