1. K.E. Tsiolkovsky, Speculations between earth and sky, Isd-vo AN-SSSR, Moscow, 1895, p. 35 (In Russian, reprinted in 1959).
2. The orbital tower: a spacecraft launcher using the Earth's rotational energy;Pearson;Acta Astronautica,1975
3. Helical Microtubules of Graphitic Carbon;Iijima;Nature,1991
4. Elastic oscillations of the space elevator ribbon;Cohen;Journal of Guidance Control, and Dynamics,2007
5. B.C. Edwards, E.A. Westling, The Space Elevator: A Revolutionary Earth-to-Space Transportation System, 2003.