Ultrasound transmission through monodisperse 2D microfoams Lorène Champougny, Juliette Pierre, Antoine Devulder, Valentin Leroy and Marie-Caroline Jullien Eur. Phys. J. E, 42 1 (2019) 6 Published online: 21 January 2019 DOI: 10.1140/epje/i2019-11767-1