Extremely high spectral resolution measurements of the 450 µm atmospheric window at Chajnantor with APEX
J. R. Pardo, C. De Breuck, D. Muders, J. González, F. M. Montenegro-Montes, J. P. Pérez-Beaupuits, J. Cernicharo, C. Prigent, E. Serabyn, T. Mroczkowski and N. Phillips
