1. Kong, H. and Gosselin, C.M., Type Synthesis of Parallel Mechanisms, Springer, 2007.
2. Merlet, J.-P., Parallel Robots, Springer, 2007, 2nd ed., p. 269.
3. Aleshin, A.K., Glazunov, V.A., Rashoyan, G.V., and Shai, O., Analysis of kinematic screws that determine the topology of singular zones of parallel-structure robots, J. Mach. Manuf. Reliab., 2016, vol. 45, no. 4, p. 291.
4. Merlet, J.P., Determination of 6D workspace of gough-type parallel manipulator and comparison between different geometries, Int. J. Rob. Res., 1999, vol. 18, no. 9, p. 902.
5. Evtushenko, Yu.G., A numerical method for finding the global extremum of functions (enumeration on a nonuniform grid), Zh. Vychisl. Mat. Mat. Fiz., 1971, vol. 11, no. 6, p. 1390.