Englert, G., A. de León, F. Tessele, and C. Locatelli. “tomic orce icroscopy canning lectron icroscopy: mparative valuation on olid urfaces”. cta icroscopica, ol. 12, no. 1, Dec. 2003, pp. 107-10, https://acta-microscopica.org/acta/article/view/323.