Flag-transitive 2-designs from PSL(2, q) with block size 4

Xiaoqin Zhan, Suyun Ding, Shuyi Bai. Flag-transitive 2-designs from PSL(2, q) with block size 4. Des. Codes Cryptography, 87(11):2723-2728, 2019. [doi]

@article{ZhanDB19,
  title = {Flag-transitive 2-designs from PSL(2, q) with block size 4},
  author = {Xiaoqin Zhan and Suyun Ding and Shuyi Bai},
  year = {2019},
  doi = {10.1007/s10623-019-00648-3},
  url = {https://doi.org/10.1007/s10623-019-00648-3},
  researchr = {https://researchr.org/publication/ZhanDB19},
  cites = {0},
  citedby = {0},
  journal = {Des. Codes Cryptography},
  volume = {87},
  number = {11},
  pages = {2723-2728},
}