Diffusion approximation and short-path statistics at low to intermediate Knudsen numbers Guillaume Terrée, Stéphane Blanco, Mouna El Hafi, Richard Fournier and Julien Yves Rolland EPL, 110 2 (2015) 20007 Published online: 08 May 2015 DOI: 10.1209/0295-5075/110/20007