Li, S., & Zhu, Y. Periodic Orbits of Radially Symmetric Keplerian-Like Systems with a Singularity. Wiley.
Chicago Style (17th ed.) CitationLi, Shengjun, and Yuming Zhu. Periodic Orbits of Radially Symmetric Keplerian-Like Systems with a Singularity. Wiley.
MLA (9th ed.) CitationLi, Shengjun, and Yuming Zhu. Periodic Orbits of Radially Symmetric Keplerian-Like Systems with a Singularity. Wiley.
Warning: These citations may not always be 100% accurate.