[1] ( 版) <https://www8.garmin.com/xmlschemas/TrackPointExtensionv1.xsd>
[3] GPS Exchange Format Extensions XML v2 - Welcome
(Garmin Developer Team 著, 版)
<http://www.garmindeveloper.com/schemas/gpxx/v3/>
[4] ( 版) <http://www8.garmin.com/xmlschemas/GpxExtensions/v3/GpxExtensionsv3.xsd>
[8] ( 版) <http://geo.javawa.nl/schemas/WaypointExtensionv1.xsd>