Aletta, F., J. Kang, S. Fuda, and A. Astolfi. “The Effect of Walking Sounds from Different Walked-on Materials on the Soundscape of Urban Parks”. Journal of Environmental Engineering and Landscape Management, vol. 24, no. 3, Aug. 2016, pp. 165-7, doi:10.3846/16486897.2016.1172076.