Validating a real-time PMU-based application for monitoring of sub-synchronous wind farm oscillations. - Maxime Baudette; Luigi Vanfretti; Gerard Del-Rosario; Albert Ruiz-Alvarez; José Luis Domínguez-García; Iyad Al Khatib; Muhammad Shoaib Almas; Ignasi Cairó; Jan Ove Gjerde (ISGT, 2014)