STUMPF, Marco Aurelio, Fernanda FLACH, Josiane RESCHKE PIRES, and Marlova PIVA KULAKOWSKI. 2013. “Acoustic Absorption of Mortar Composites With Waste Material”. Archives of Acoustics 38 (3): 417–423. https://acoustics3.ippt.pan.pl/index.php/aa/article/view/61.