@book { Performanceof8ColdClimateEnvelopesforPassiveHouses,
    title = "Performance of 8 Cold-Climate Envelopes for Passive Houses",
    author = "Rolf {Jacobson}",
    year = "2012",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783656269960",
    url = "https://www.hausarbeiten.de/document/200508"
}