@book { Awearableprototypeofreflectivesensorfornoninvasivemeasurementofheartrate,
    title = "A wearable prototype of reflective sensor for non invasive measurement of heart rate",
    author = "Govardhan Reddy {Patancheru}",
    year = "2014",
    publisher = "Anchor Academic Publishing",
    address = "Hamburg, Germany",
    url = "https://m.anchor-publishing.com/document/312791"
}