1. Abe, M., Nakamura, S., Shikano, K., & Kuwabara, H. (1988). Voice conversion through vector quantization. In International conference on acoustics, speech, and signal processing, ICASSP-88 (Vol. 1, pp. 655–658).
2. Charlier, M., Ohtani, Y., Toda, T., Moinet, A., & Dutoit, T. (2009). Cross-language voice conversion based on eigenvoices. In 10th Annual conference of the international speech communication association, Brighton, UK, September 6–10, pp. 1635–1638.
3. Chen, L., Ling, Z., Liu, L., & Dai, L. (2014). Voice conversion using deep neural networks with layer-wise generative training. IEEE ACM Transactions on Audio, Speech, and Language Processing, 22(12), 1859–1872.
4. Chen, X., & Zhang, L. (2014). High-quality voice conversion system based on GMM statistical parameters and RBF neural network. The Journal of China Universities of Posts and Telecommunications, 21(5), 68–75.
5. Childers, D., Yegnanarayana, B., & Wu, K. (1985) Voice conversion: Factors responsible for quality. In IEEE international conference on acoustics, speech, and signal processing, ICASSP ’85 (Vol. 10, pp. 748–751).