Low-cost electro-acoustic system based on ferroelectret transducer for characterizing liquids - Palitó, Thamyres Tâmulla Cavalcante; Assagra, Yuri Andrey Olivato; Altafim, Ruy Alberto Pisani; Carmo, João Paulo Pereira do; Altafim, Ruy Alberto Corrêa (Measurement, 2019)