M. Babic, G. C. Miliaresis, M. Mikos, R. Ambu, and M. Calì, “New Method for Estimating Fractal Dimension in 3D Space and Its Application to Complex Surfaces”, Int. J. Adv. Sci. Eng. Inf. Technol., vol. 9, no. 6, pp. 2154–2159, Dec. 2019.