@Book{Poeverlein1949,
author  = "Poeverlein, Hermann",
title   = "Strahlwege von Radiowellen in der Ionosphäre",
year    = "1949",
address = "München",
series  = "Sitzungsberichte",
volume  = "1948,10",
url     = "https://publikationen.badw.de/de/016510405",
}