Donadel, Karina, Jerônimo Gomes Moraes, Carlos Renato Rambo, Dachamir Hotza, and A. P. Novaes de Oliveira. 2009. “Processing and Characterization of Ceramic Foams Obtained from Natural Amorphous Silica Fibers by the Replication Method”. Exacta 6 (1):41-48. https://doi.org/10.5585/exacta.v6i1.813.