Varani, Massimiliano; Mattetti, Michele; Molari, Giovanni, Model to analyse semi-active suspension system for a tractor cab, in: Proceedings International Conference Ragusa SHWA “Safety Health and Welfare in Agriculture Agro-food and Forestry Systems”, 2015, pp. 137 - 142 (atti di: Safety Health and Welfare in Agriculture Agro-food and Forestry Systems, Lodi – Italy, September 8-11, 2015) [Contribution to conference proceedings]