Carvalho Júnior, Álvaro B. de, Inácio, M. J., Fonseca Júnior, A. S. da, Júnior, G. D. P., Lopes, M. H. T., Ramos, S. G., Filho, J. H. D., & Almeida, M. S. (2022). Determination of Stiffness and Hardness of Glasses by using Acoustic Waves Testing. International Journal of Advanced Engineering Research and Science, 9(3). https://journal-repository.com/index.php/ijaers/article/view/4803