1. P. Brunovsky, Kibernetika, No. 6, 176–188 (1970).
2. A. I. Ovseevich, in Proceedings of the Conference on Modeling, Estimation and Filtering of Systems with Uncertainty (Sopron, Hungary, 1990) (Birkhäuser, Basel, 1991), pp. 324–333.
3. A. Grothendieck, Am. J. Mat, No. 79, 121–138.
4. T. Yu. Figurina and A. I. Ovseevich, J. Optim. Theory Appl. 100(2), 349–364 (1999).
5. I. M. Ananievski, N. V. Anokhin, and A. I. Ovseevich, Dokl. Math. 82, 831–834 (2010).