From billiards to thermodynamics. - Timothy Chumley; Scott Cook; R. Feres (Comput. Math. Appl., 2013)

Knudsen Diffusivity in Random Billiards: Spectrum, Geometry, and Computation. - Timothy Chumley; Renato Feres; Luis Alberto Garcia German (SIAM J. Appl. Dyn. Syst., 2021)