@Book{Piloty1949,
author  = "Piloty, Hans",
title   = "Die Halbierung eines symmetrischen Reaktanz-Vierpols",
year    = "1949",
address = "München",
series  = "Sitzungsberichte",
volume  = "1947,21.",
url     = "https://publikationen.badw.de/en/003395848",
}