@book { LehrprobeWarumsindKnochensostabil,
    title = "Lehrprobe: Warum sind Knochen so stabil?",
    author = "Patrick {Schuller}",
    year = "2011",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783640983988",
    url = "https://www.hausarbeiten.de/document/176982"
}