Kryazhimskiy, A.V. <https://pure.iiasa.ac.at/view/iiasa/1393.html> & Osipov, Y.S. <https://pure.iiasa.ac.at/view/iiasa/2269.html>  (1995).  Inverse Problems for Ordinary Differential Equations: Dynamical Solutions.     Basel, Switzerland: (Gordon and Breach) Taylor and Francis.  ISBN 978-2881249440