Jie
Zhou
Chen, J. ., Guo, C. ., Ji, Z. ., Poon, Y.-T. ., Yu, N. ., Zeng, B. ., & Zhou, J. . (2016). Joint product numerical range and geometry of reduced density matrices. ArXiv. Retrieved from http://arxiv.org/abs/1606.07422 (Original work published June 2016)