1. A. M. Turing COMPUTING MACHINERY AND INTELLIGENCE https://academic.oup.com/mind/article/LIX/236/433/986238
2. Alex Debecker2020 Chatbot Statistics - All The Data You Need https://blog.ubisend.com/optimise-chatbots/chatbot-statistics
3. Mobile Web Predictions for 2020- https://deviceatlas.com/blog/15-mobile-web-predictions-2020
4. Ming Hsiang Su, Chung Hsien Wu, Kun Yi Huang, Qian Bei Hong, Hsin Min Wang- A chatbot using LSTM-based multi-layer embedding for elderly care- https://researchoutput.ncku.edu.tw/en/publications/a-chatbot-using-lstm-based-multi-layer-embedding-for-elderly-care
5. Suzana Ilic´,Reiichiro Nakano,Ivo Hajnal-Designing dialogue systems: A mean, grumpy, sarcastic chatbot in the browser- https://arxiv.org/pdf/1909.09531.pdf