@book{das+nutenfeld+in+zahnarmaturen+und+die+wirbelstromverluste+in+massiven+armaturkupferleitern,
    author = {Ottenstein, Simon},
    title = {Das Nutenfeld in Zahnarmaturen und die Wirbelstromverluste in massiven Armaturkupferleitern},
    address = {Stuttgart},
    publisher = {Verlag von Fedinand Enke},
    date = {1904}
}