Kumari, R.; Kushvah, B. S. (2013). "Equilibrium points and zero velocity surfaces in the restricted four-body problem with solar wind drag". Astrophysics and Space Science. 344 (2): 347–359. arXiv:1212.2368. doi:10.1007/s10509-012-1340-y. S2CID254265370.
Bozis, G. (1976). "Zero velocity surfaces for the general planar three-body problem". Astrophysics and Space Science. 43 (2): 355–368. doi:10.1007/BF00640013. S2CID124131665.
Kumari, R.; Kushvah, B. S. (2013). "Equilibrium points and zero velocity surfaces in the restricted four-body problem with solar wind drag". Astrophysics and Space Science. 344 (2): 347–359. arXiv:1212.2368. doi:10.1007/s10509-012-1340-y. S2CID254265370.
Kalvouridis, T. J. (2001). "Zero-velocity surfaces in the three-dimensional ring problem of N+ 1 bodies". Celestial Mechanics and Dynamical Astronomy. 80 (2): 133–144. doi:10.1023/A:1011919508410. S2CID122886855.
Bozis, G. (1976). "Zero velocity surfaces for the general planar three-body problem". Astrophysics and Space Science. 43 (2): 355–368. doi:10.1007/BF00640013. S2CID124131665.
Kumari, R.; Kushvah, B. S. (2013). "Equilibrium points and zero velocity surfaces in the restricted four-body problem with solar wind drag". Astrophysics and Space Science. 344 (2): 347–359. arXiv:1212.2368. doi:10.1007/s10509-012-1340-y. S2CID254265370.
Kalvouridis, T. J. (2001). "Zero-velocity surfaces in the three-dimensional ring problem of N+ 1 bodies". Celestial Mechanics and Dynamical Astronomy. 80 (2): 133–144. doi:10.1023/A:1011919508410. S2CID122886855.