Optimization of Cost-Effective and Reproducible Flexible Humidity Sensors Based on Metal-Organic Frameworks. - Víctor Toral; Florin C. Loghin; Antonio Rodríguez-Diéguez; Alejandro Lapresta-Fernández; Diego Pedro Morales; Almudena Rivadeneyra; Alfonso Salinas-Castillo (Sensors, 2020)