1. A. L. Cauchy, “Recherche sur les polyèdres — premier mémoire,” J. École Polytech., 9, C. 16, 66–86 (1813).
2. Chebyshev Mechanisms [in Russian], http://tcheb.ru/ru.
3. V. A. Emelichev, O. I. Mel’nikov, V. I. Sarvanov, and R. I. Tyshkevich, Lectures on Graph Theory [in Russian], Nauka, Moscow (1990).
4. A. T. Fomenko, Visual Geometry and Topology. Mathematical Images in the Real World [in Russian], Izd. Mosk. Univ., Moscow (1998).
5. F. K. Hwang, “A linear time algorithm for full Steiner trees,” Operations Res. Lett., 4, No. 5, 235–237 (1986).