Perna, D., Fulchignoni, M., Barucci, M. A., Fornasier, S., Feller, C., Deshapriya, J. D. P., et al. (2017). Multivariate statistical analysis of OSIRIS/Rosetta spectrophotometric data of comet 67P/Churyumov-Gerasimenko. Astronomy and Astrophysics, 600: A115. doi:10.1051/0004-6361/201630015.