by Zhang, C., Bhargava, G., Elwell, M. D., Parasher, S., Zhou, B., Yates, D., Knoke, I., Neitzel, I. and Gogotsi, Y.
Reference:
C. Zhang, G. Bhargava, M. D. Elwell, S. Parasher, B. Zhou, D. Yates, I. Knoke, I. Neitzel, and Y. Gogotsi, "Hollow graphitic carbon nanospheres: synthesis and properties", Journal of Materials Science, vol. 49, no. 5, 2014, pp. 1947.
Bibtex Entry:
@article{365,
   author = {Zhang, C. and Bhargava, G. and Elwell, M. D. and Parasher, S. and Zhou, B. and Yates, D. and Knoke, I. and Neitzel, I. and Gogotsi, Y.},
   title = {Hollow graphitic carbon nanospheres: synthesis and properties},
   journal = {Journal of Materials Science},
   volume = {49},
   number = {5},
   pages = {1947},
   ISSN = {0022-2461},
   DOI = {10.1007/s10853-013-7796-5},
   year = {2014},
   date= {03/01}
   type = {Journal Article},
   url = https://nano.materials.drexel.edu/wp-content/papercite-data/pdf/365.pdf
}

Hollow graphitic carbon nanospheres: synthesis and properties