1. Sentiment of Emojis
2. A Systematic Review of Emoji: Current Research and Future Perspectives
3. J. McCurry. The Inventor of Emoji on His Famous Creations – and His All-time Favorite. The Guardian [Internet]. October 19, 2022. Available: https://www.theguardian.com/technology/2016/oct/27/emoji-inventor-shigetaka-kurita-moma-new-york-text
4. N. Sarwar. 10 Years of Emojis on iPhone: A Brief Timeline. Beebom [Internet]. November 22, 2018. Available: https://beebom.com/emojis-iphone-10-years/
5. Google Japan Blog. You Can Now Use Emojis in Gmail [Internet]. Available: https://japan.googleblog.com/2008/10/gmail.html