@inbook{8760631, author={Anna-Leena Noponen and Sakari Lukkarinen and Raimo Sepponen}, editor={Pahlm, Olle and Wagner, Galen S.}, title={Chapter 2. Phonocardiography}, booktitle={Multimodal Cardiovascular Imaging: Principles and Clinical Applications}, publisher={The McGraw-Hill Companies}, address={New York, NY}, year={2011}, url={accesscardiology.mhmedical.com/content.aspx?aid=8760631} }