@Book{Ebert1909,
author  = "Ebert, Hermann",
title   = "Beitrag zur Physik der Mondoberfläche",
year    = "1909",
address = "München",
series  = "Sitzungsberichte",
volume  = "1908,9",
url     = "https://publikationen.badw.de/de/003389803",
}