Thomas Pingel, Keith C. Clarke. Perceptually Shaded Slope Maps for the Visualization of Digital Surface Models. Cartographica, 49(4):225-240, 2014. [doi]
@article{PingelC14,
title = {Perceptually Shaded Slope Maps for the Visualization of Digital Surface Models},
author = {Thomas Pingel and Keith C. Clarke},
year = {2014},
doi = {10.3138/carto.49.4.2141},
url = {http://dx.doi.org/10.3138/carto.49.4.2141},
researchr = {https://researchr.org/publication/PingelC14},
cites = {0},
citedby = {0},
journal = {Cartographica},
volume = {49},
number = {4},
pages = {225-240},
}