1. People Continue to Rely on Maps and Navigational Apps, Amy He. July, 18, 2019. Insider Intelligence. InsiderIntelligence
2. Lecture Notes in Bioengineering;JR Lozano-Pinilla,2022
3. CityMapper app. https://citymapper.com/
4. Waze app. https://www.waze.com/en/company
5. Moovit app. https://moovit.com/