Sant’Anna, S. S., de Souza, D. A., Carvalho, C. de F., & Yoshida, M. I. (2008). Morphological and thermal analyses of flexible polyurethane foams containing commercial calcium carbonate. Eclética Química, 33(2), 55–60. https://doi.org/10.26850/1678-4618eqj.v33.2.2008.p55-60