Dynamics of the spectral behaviour of an ultrashort laser pulse in an argon-gas-filled capillary discharge-preformed plasma channelS. Sakai, T. Higashiguchi, N. Yugami, N. Bobrova, Y. Sentoku and R. KodamaEPJ Web of Conferences, 59 (2013) 17002DOI: https://doi.org/10.1051/epjconf/20135917002