@book { TrainingslehreKrafttrainingdesLWSBereichs,
    title = "Trainingslehre. Krafttraining des LWS-Bereichs",
    author = "Silvio {Reinfelder}",
    year = "2013",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783656413813",
    url = "https://www.hausarbeiten.de/document/213200"
}