@book{wechselstromtechnik+bd+1+der+einphasige+wechselstrom,
    author = {Zsakula, Milán},
    title = {Wechselstromtechnik. Bd. 1, Der einphasige Wechselstrom},
    address = {Wien i Leipzig},
    publisher = {A. Hartleben's Verlag},
    date = {1904}
}