1. V. A. Dubravina, Russ. J. Math. Phys. 21 (2), 285–288 (2014).
2. O. G. Smolyanov, A. G. Tokarev, and A. Truman, J. Math. Phys. 43 (10), 5161–5171 (2002).
3. A. V. Bulinskii and A. N. Shiryaev, Theory of Stochastic Processes (Fizmatlit, Moscow, 2005) [in Russian].
4. M. Gadella, S. Kuru, and J. Negro, Phys. Lett. A 362, 265–268 (2007).
5. Symplectic Geometry and Topology, Ed. by Y. Eliashberg and L. Traynor (Am. Math. Soc., Providence, R.I., 1999).