@book{grundriss+der+differential+u+integral+rechnung+t+1+differential+rechnung,
    author = {Kiepert, Ludwig},
    title = {Grundriß der Differential- u. Integral-Rechnung. T. 1, Differential-Rechnung},
    address = {Hannover},
    publisher = {Helwingsche Verlagsbuchhandlung},
    date = {1905}
}