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The first two of the links for references on the GRASS LiDAR tools are dead links. Can the relevant documents be found and put onto the GRASS server where they can be archived and maintained? The third link is still live, but slow. Perhaps it would be good
to also archive that PDF where it is more easily accessible.
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<div>Michael</div>
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<i>References:</i></p>
<ul style="list-style-image: url(data:image/gif;base64,R0lGODlhBQANAIAAAGOMnP///yH5BAEAAAEALAAAAAAFAA0AAAIJjI+pu+APo4SpADs=); line-height: 19px; list-style-type: square; margin: 0.3em 0px 0px 1.5em; padding: 0px; font-family: sans-serif; font-size: 13px; background-color: rgb(255, 255, 255); ">
<li style="margin-bottom: 0.1em; ">Detailed description: <a rel="nofollow" class="external text" href="http://www.foss4g2006.org/getFile.py/access?contribId=48&sessionId=59&resId=7&materialId=slides&confId=1" style="text-decoration: none; color: rgb(51, 102, 187); background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAoAAAAKCAYAAACNMs+9AAAAVklEQVR4Xn3PgQkAMQhDUXfqTu7kTtkpd5RA8AInfArtQ2iRXFWT2QedAfttj2FsPIOE1eCOlEuoWWjgzYaB/IkeGOrxXhqB+uA9Bfcm0lAZuh+YIeAD+cAqSz4kCMUAAAAASUVORK5CYII=); padding-right: 13px; background-position: 100% 50%; background-repeat: no-repeat no-repeat; ">here</a> (FOSS4G
2006) [DEAD LINK]</li><li style="margin-bottom: 0.1em; ">Summarised version: <a rel="nofollow" class="external text" href="http://geomatica.como.polimi.it/corsi/remote_sensing/LiDAR_filtering_with_GRASS-lab4.pdf" style="text-decoration: none; color: rgb(51, 102, 187); background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAKCAYAAACJxx+AAAAABGdBTUEAAK/INwWK6QAAABl0RVh0U29mdHdhcmUAQWRvYmUgSW1hZ2VSZWFkeXHJZTwAAABnSURBVHherc2xCYBADEbhLOIIVu50K1iKhZOIC7iFcJWFtRbaCW7wxL/w7hCtDLwmfCRmzhOXlSNVvwLYlUA0QkUzCd1g2cHPSmA7IK+FEOgGcK16vEsvhLQTDBeStBP458LLBPDVCdJC7IENvonwAAAAAElFTkSuQmCC); padding-right: 12px; background-position: 100% 50%; background-repeat: no-repeat no-repeat; ">here</a> (2010)
[DEAD LINK]</li><li style="margin-bottom: 0.1em; ">Calibration of the filtering parameters (around 20 parameters) by integrating the USGS UCODE and GRASS, see <a rel="nofollow" class="external text" href="http://www.isprs.org/proceedings/XXXVIII/1_4_7-W5/paper/Brovelli-126.pdf" style="text-decoration: none; color: rgb(51, 102, 187); background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAKCAYAAACJxx+AAAAABGdBTUEAAK/INwWK6QAAABl0RVh0U29mdHdhcmUAQWRvYmUgSW1hZ2VSZWFkeXHJZTwAAABnSURBVHherc2xCYBADEbhLOIIVu50K1iKhZOIC7iFcJWFtRbaCW7wxL/w7hCtDLwmfCRmzhOXlSNVvwLYlUA0QkUzCd1g2cHPSmA7IK+FEOgGcK16vEsvhLQTDBeStBP458LLBPDVCdJC7IENvonwAAAAAElFTkSuQmCC); padding-right: 12px; background-position: 100% 50%; background-repeat: no-repeat no-repeat; ">here</a>
[LIVE BUT SLOW LINK]</li></ul>
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<div>____________________</div>
<div>C. Michael Barton</div>
<div>Director, Center for Social Dynamics & Complexity </div>
<div>Professor of Anthropology, School of Human Evolution & Social Change</div>
<div>Arizona State University</div>
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voice: <span class="Apple-tab-span" style="white-space: pre; "> </span>480-965-6262 (SHESC), 480-727-9746 (CSDC)<br>
fax: 480-965-7671 (SHESC), 480-727-0709 (CSDC)<br>
<div>www: <a href="http://www.public.asu.edu/~cmbarton">http://www.public.asu.edu/~cmbarton</a>,
<a href="http://csdc.asu.edu">http://csdc.asu.edu</a></div>
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