@article{etna_vol58_pp84-100,
  author  = {Fang Chen and Bi-Cong Ren},
  title   = {A modified alternating positive semidefinite splitting preconditioner for block three-by-three saddle point problems},
  journal = {Electron. Trans. Numer. Anal.},
  volume  = {58},
  year    = {2023},
  pages   = {84--100},
  doi     = {10.1553/etna_vol58s84},
}