@article{article,
title = {Evaluation of wheel motion resistance of an agricultural tractor operating in field conditions in function of tire type, tractor ballasting and forward speed},
author = {},
year = {2000},
journal = {Engenharia Agricola},
volume = {20},
number = {2},
pages = {171-178},
howpublished = "\url{https://eurekamag.com/research/003/761/003761710.php}"
}