Battin, R. H. (1999). An introduction to the mathematics and methods of astrodynamics (Rev. ed.). American Institute of Aeronautics and Astronautics, Inc..

Battin, Richard H. An Introduction to the Mathematics and Methods of Astrodynamics. Rev. ed. Reston, Va.: American Institute of Aeronautics and Astronautics, Inc., 1999.

Battin, Richard H. An Introduction to the Mathematics and Methods of Astrodynamics. Rev. ed. American Institute of Aeronautics and Astronautics, Inc., 1999.