References :

N. Fray, Y. Bénilan, A. Jolly,  E. Arzoumanian, E. Es-Sebbar,T. Ferradaz, M.-C. Gazeau, J.-C. Guillemin, and M. Schwell :Temperature-dependent photoabsorption cross-section of cyanodiacetylene in the vaccum UV, Journal of Geophysical Research-Planets 115, E06010 (2010)