Ehlers, Jürgen Geometric Analysis and Gravitation, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;
ajp607.pdf (出版社版), 111KB
Ehlers, J., Ozsvath, I., & Schücking, E. L. (2006). Active mass under pressure. American Journal of Physics, 74(7), 607-613.