@article{Gülgen2021_409112,
author={Fatih Gülgen and GÜLGÜN ÖZKAN and Osman Salih Yılmaz},
title={Determining highway slope ratio using a method based on slope angle calculation},
year={2021},
journal={International Journal of Engineering and Geosciences},
issn={2548-0960},
volume={6},
number={2},
url={http://search/yayin/detay/409112}
}