Far-ultraviolet Spectroscopy of Recent Comets with the Cosmic Origins Spectrograph on the Hubble Space Telescope, Feldman, P. D.,Weaver, Harold,A'Hearn, Michael F., The Astronomical Journal, 155, 2018-05-01 00:00:00, 2018AJ....155..193F
Launched in 1990, the NASA/ESA Hubble Space Telescope remains the premier UV and visible light telescope in orbit. With well over 1.6 million observations from 10 different scientific instruments, the ESA Hubble Science Archive is a treasure trove of astronomical data to be exploited.
European Space Agency, 2016, Using Hubble To Measure Volatile Abundances And The D/H Ratio In A Bright Too Comet, 1.0, European Space Agency, https://doi.org/10.5270/esa-lj65pjg