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Robbins, Stuart J.. (2018). A New Global Database of Lunar Impact Craters >1-2 km: 1. Crater Locations and Sizes, Comparisons with Published Databases, and Global Analysis. Journal of Geophysical Research: Planets, (), –. doi:10.1029/2018JE005592 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research