1. Yang, C.Y., Cai, W., Tang, L. (2024). Extenics(2nd edition). Beijing, China: Science Press.
2. Yang, C.Y. (2018). " Extensible Innovation Methods", Boca Raton, CRC Press.
3. " The Classification of Paradox and Paradox Problems in Management Science",;He;World Journal of Management Science and Technology,2023
4. Cai, W. (2010). "The Revolution of Creativity: Makes you smarter", Beijing, Science Press.
5. Li, Z.X. (2000). "Contradiction Management: The Path to Sustainable Corporate Growth", Beijing, Economic Management Press.