Gallego, E., M. Moya, E. Ayuga-Téllez, A. I. García, and F. Ayuga. “The Influence of Management and Construction Methods in the Repair Costs of Spain’s Low-Volume Road Network”. Journal of Agricultural Engineering, vol. 47, no. 2, June 2016, pp. 118-26, doi:10.4081/jae.2016.537.