2.2. Adding a Tree View to Manage the Map Panel's Layers — Developing OGC Compliant Web Applications with GeoExt
GitHub - lcalisto/ol-layer-control: Layer control for Openlayers 3.x and above
How To Add Layerswitcher Control in OpenLayers Easily - YouTube
geoserver - openlayers-automatically adding the layers on clicking dynamic checkboxes without actually specifying all the published layers attributes - Geographic Information Systems Stack Exchange
Openlayers Track example - OpenStreetMap Wiki
OpenLayers 3+: Adding a layer switcher | by Antonis Christofides | GIS tips | Medium