Characterization of Industrial Coolant Fluids and Continuous Ageing Monitoring by Wireless Node - Enabled Fiber Optic Sensors. - Alexandros El Sachat; Anastasia Meristoudi; Christos Markos; Andreas Sakellariou; Aggelos Papadopoulos; Serafim Katsikas; Christos Riziotis (Sensors, 2017)