Paiva, Prada & Picard 2007, pp. 24–33. Paiva, Ana; Prada, Rui; Picard, Rosalind W. (2007). "Facial Expression Synthesis using PAD Emotional Parameters for a Chinese Expressive Avatar". Affective Computing and Intelligent Interaction. Lecture Notes in Computer Science. Vol. 4738. Springer Science+Business Media. doi:10.1007/978-3-540-74889-2. ISBN978-3-540-74888-5.
Artificial Intelligence Index Report 2023(PDF) (Report). Stanford Institute for Human-Centered Artificial Intelligence. p. 98. Multiple high quality text-to-video models, AI systems that can generate video clips from prompted text, were released in 2022.