References for the Mathematical Particle Tracing Interface
1. L.D. Landau and E.M. Lifshitz, Mechanics, 3rd ed., Elsevier, 1976.
2. John Greenwood, “The correct and incorrect generation of a cosine distribution of scattered particles for Monte-Carlo modeling of vacuum systems,” Vacuum, vol. 67, no. 2, pp. 217-222, 2002.
3. L. Devroye, Non-Uniform Random Variate Generation, Springer-Verlag, 1986.