Vibroarthrography for early detection of knee osteoarthritis using normalized frequency features. - Befrui, Nima; Elsner, Jens; Flesser, Achim; Huvanandana, Jacqueline; Jarrousse, Oussama; Le, Tuan Nam; Müller, Marcus; Schulze, Walther H. W.; Taing, Stefan; Weidert, Simon (Medical Biol. Eng. Comput., 2018)