1. Agafonkin V. (2019). Zoom levels. Leaflet. [online] Dostupné z URL: https://leafletjs.com/examples/zoom-levels/
2. Aisch G. (2017). kartograph.js readme. [online] GitHub. Dostupné z URL: https://github.com/kartograph/kartograph.js/blob/master/readme.md
3. Alliance (2020). Switching to Mapbox: Is Google Maps API too Expensive? [online] Dostupné z URL: https://www.allianceinteractive.com/blog/cost-of-google-maps-and-its-alternatives/.
4. Altaweel M. (2016). GIS and NoSQL Databases. [online] GIS Lounge. Dostupné z URL: https://www.gislounge.com/gis-nosql-databases/
5. Alza (2019). Rozlišení displeje. [online] Dostupné z URL: https://www.alza.cz/slovnik/rozliseni-displeje-art12961.htm