1. https://mathshistory.st-andrews.ac.uk/Biographies/Riccati
2. Reid, W.T. (1980) Riccati Differential Equations. Academic Press, New York.
3. The Calculus of Variations and Optimal Control
4. Fraga, S., García de la Vega, J.M. and Fraga, E.S. (1999) The Schrodinger and Riccati Equations. In: Lecture Notes in Chemistry, Vol. 70, Springer-Verlag, Berlin.
5. Scwabl, F. (1992) Quantum Mechanics. Springer, Berlin.