<para>The <ulink url="http://geos.osgeo.org/">GEOS</ulink>
geometry operations library, and the algorithmic work of Martin
Davis in
- making it all work, ongoing maintainenance and support of Mateusz Loskot, Paul Ramsey and others.</para>
+ making it all work, ongoing maintenance and support of Mateusz Loskot, Paul Ramsey and others.</para>
<para>The <ulink url="http://proj.osgeo.org">Proj4</ulink>
cartographic projection library, and the work of Gerald Evenden and