@article{CarpiL86,
  title = {Square-Free Words on Partially Commutative Free Monoids},
  author = {Arturo Carpi and Aldo de Luca},
  year = {1986},
  researchr = {https://researchr.org/publication/CarpiL86},
  cites = {0},
  citedby = {0},
  journal = {Inf. Process. Lett.},
  volume = {22},
  number = {3},
  pages = {125-131},
}