Monitoring Lipase/Esterase Activity by Stopped Flow in a Sequential Injection Analysis System Using p-Nitrophenyl Butyrate. - Jorge Pliego; Juan Carlos Mateos; Jorge Rodriguez; Francisco Valero 002; Mireia Baeza; Ricardo Femat; Rosa Camacho; Georgina Sandoval; Enrique J. Herrera-López (Sensors, 2015)