K. Domański, P. Grabiec, T. Gotszalk, R. B. Beck, T. Dębski, and I. W. Rangelow, “Adsorption properties of porous silicon”, JTIT, vol. 3, no. 1, pp. 53–56, Mar. 2001, doi: 10.26636/jtit.2001.1.41.