Exploration of Spanish Olive Oil Quality with a Miniaturized Low-Cost Fluorescence Sensor and Machine Learning Techniques. - Francesca Venturini; Michela Sperti; Umberto Michelucci; Ivo Herzig; Michael Baumgartner 002; Josep Palau Caballero; Arturo Jimenez; Marco Agostino Deriu (CoRR, 2021)