Wang, Zhong Yu, Sun, Yong Chang, He, Zhen Hong, Xing, Tian, Wang, Zhong‐Yu, Sun, Yong‐Chang, He, Zhen‐Hong, Wang, Kuan, Liu, Zhao Tie, Elsegood, Mark R.J., Bedwell, Elizabeth V., Redshaw, Carl, "Co-polymerization of propylene oxide and CO2 using early transition metal (groups IV and V) metallocalix[n]arenes (n = 4, 6, 8)", Journal of Applied Polymer Science,