Lee, J.-C., Massironi, M., Ip, W.-H., Giacomini, L., Ferrari, S., Penasa, L., et al. (2016). Geomorphological mapping of comet 67P/Churyumov-Gerasimenko's Southern hemisphere. Mon. Not. Roy. Astron. Soc., 462, S573-S592. doi:10.1093/mnras/stx450.