A Definitive Constructive Open Mapping Theorem?

Douglas S. Bridges, Hajime Ishihara. A Definitive Constructive Open Mapping Theorem?. Math. Log. Q., 44:545-552, 1998.

@article{BridgesI98,
  title = {A Definitive Constructive Open Mapping Theorem?},
  author = {Douglas S. Bridges and Hajime Ishihara},
  year = {1998},
  tags = {source-to-source, open-source},
  researchr = {https://researchr.org/publication/BridgesI98},
  cites = {0},
  citedby = {0},
  journal = {Math. Log. Q.},
  volume = {44},
  pages = {545-552},
}