Wojciech Buszkowski. Type Logics and Pregroups. Studia Logica, 87(2-3):145-169, 2007. [doi]
@article{Buszkowski07:1,
  title = {Type Logics and Pregroups},
  author = {Wojciech Buszkowski},
  year = {2007},
  doi = {10.1007/s11225-007-9083-4},
  url = {http://dx.doi.org/10.1007/s11225-007-9083-4},
  tags = {logic},
  researchr = {https://researchr.org/publication/Buszkowski07%3A1},
  cites = {0},
  citedby = {0},
  journal = {Studia Logica},
  volume = {87},
  number = {2-3},
  pages = {145-169},
}