4 | | * http://geospatialmethods.org/spheres/ |
5 | | * http://planetmath.org/encyclopedia/AreaOfASphericalTriangle.html |
6 | | * !PgAstro includes !PgSphere, has Area on a Shere calculation, http://www.pgastro.org/doc/html/index.html |
7 | | * http://trs-new.jpl.nasa.gov/dspace/handle/2014/40409?mode=full&submit_simple=Show+full+item+record Area on a sphere algorithm |
| 4 | * http://geospatialmethods.org/spheres/ |
| 5 | * http://planetmath.org/encyclopedia/AreaOfASphericalTriangle.html |
| 6 | * !PgAstro includes !PgSphere, has Area on a Shere calculation, http://www.pgastro.org/doc/html/index.html |
| 7 | * http://trs-new.jpl.nasa.gov/dspace/handle/2014/40409?mode=full&submit_simple=Show+full+item+record Area on a sphere algorithm |