Cheng Zhang, Gaurang Bhargava, Michael D. Elwell, Sukesh Parasher, Bing Zhou, Douglas Yates, Isabel Knoke, Ioannis Neitzel, Yury Gogotsi,
Hollow graphitic carbon nanospheres: synthesis and properties Journal of Materials Science. ,vol. 49, pp. 1947- 1956 ,(2014) ,
10.1007/S10853-013-7796-5