1. Diffusion approximation for a Knudsen gas in a thin domain with accommodation on the boundary
2. Diffusion approximation and computation of the critical size
3. Bober, A. S., Zhurin, V., Kim, V., Koroteev, A. S., Latyshev, L. A., Lyapin, E. A., Morozov, A. I., Popov, A. H. and Rylov, Y. 1991. State of work of electrical thrusters in USSR, 22nd International Electric Propulsion Conference. October1991, Viareggio, Italy.