Low-Cost Gas Sensors Produced by the Graphite Line-Patterning Technique Applied to Monitoring Banana Ripeness. - Alexandra Manzoli; Clarice Steffens; Rafaella T. Paschoalin; Alessandra A. Correa; William F. Alves; Fabio L. Leite; Paulo Sergio De Paula Herrmann (Sensors, 2011)