@Misc{ 
  SilTom22,
  author = { Sillari, Lorenzo and Tomassini, Adriano },
  title = { Rank of the Nijenhuis tensor on parallelizable almost complex manifolds },
  journal = {  },
  year = { 2022 },
  pages = {  },
  URL = { https://gecogedi.dimai.unifi.it/paper/551/ },
  note = { cvgmt preprint}
}