@Inproceedings{EPTCS352.4,
  author    = {Zeng, Zhenbing  and Lu, Jian  and Xu, Yaochen  and Wang, Yuzheng },
  year      = {2021},
  title     = {Maximizing the Sum of the Distances between Four Points on the Unit Hemisphere},
  editor    = {Jani\v{c}i\'c, Predrag and Kov\'acs, Zolt\'an},
  booktitle = {{\rm Proceedings of the 13th International Conference on}
               Automated Deduction in Geometry,
               {\rm Hagenberg, Austria/virtual, September 15-17, 2021}},
  series    = {Electronic Proceedings in Theoretical Computer Science},
  volume    = {352},
  publisher = {Open Publishing Association},
  pages     = {27-40},
  doi       = {10.4204/EPTCS.352.4},
}