Linear-systems analysis with FASP II
R.D. Shelton, Alan F. Neel, T.D. Donovan · Proceedings of the Institution of Electrical Engineers · 1975
FASP is a user-oriented FORTRAN program for analysis of signal-flow-graph and related problems. The user's program consists of a specification of branch transmittances and requests for output. These outputs include root-locus plots, various time- and frequency-response plots, and formulas for transfer functions and time-response functions.