1. Arribas, M., Elipe, A., Kalvouridis, T.J.: Central configuration in the planar $n$+1 body problem with generalized forces. Monogr. Real Acad. Cienc. Zaragoza 28, 1–8 (2006)
2. Celli, M., Lacomba, E.A., Pérez-Chavela, E.: On polygonal relative equilibria in the $N$-vortex problem. J. Math. Phys. 52(10), 103101 (2011)
3. Ding, L., Sánchez-Cerritos, J.M., Wei, J.: Notes on spatial twisted central configurations for $2N$-body problem. Astrophys. Space Sci. 367(13), 1–10 (2022)
4. Lagrange, J.: Essai sur le probleme des trois crops. Œuvres 6, 229–324 (1772)
5. Li, W., Wang, Z.: The relationships between regular polygon central configurations and masses for Newtonian $N$-body problems. Phys. Lett. A 377(31–33), 1875–1880 (2013)