Karhu, J; Tomberg, T; Senna Vieira, F; Genoud, G; Hänninen, V; Vainio, M; Metsälä, M; Hieta, T; Bell, S; Halonen, L (2019) Broadband photoacoustic spectroscopy of 14CH4 with a high-power mid-infrared optical frequency comb. Optics Letters, 44 (5). pp. 1142-1145. ISSN 0146-9592