1. F. Lempio and V. M. Veliov (1998) GAMM Mitt. Ges. Angew. Math. Mech. 21, 103–135.
2. V. S. Patsko, S. G. Pyatko, and A. A. Fedotov (2003) J. Comput. Syst. Sci. Int. 42, 320–328.
3. Construction of the attainability set of a brockett integrator
4. A. B. Kurzhanski and I. Valyi, Ellipsoidal Calculus for Estimation and Control (Birkhäuser, Boston, 1997).
5. F. L. Chernousko, State Estimation for Dynamic Systems (CRC Press, Boca Raton, 1994).