ALBA, J., del REY, R., RAMIS, J., & ARENAS, J. P. (2013). An Inverse Method to Obtain Porosity, Fibre Diameter and Density of Fibrous Sound Absorbing Materials. Archives of Acoustics, 36(3), 561–574. https://acoustics3.ippt.pan.pl/index.php/aa/article/view/165