@Misc{ 
  Ang16b,
  author = { Angella, Daniele },
  title = { On the Bott-Chern and Aeppli cohomology },
  journal = { Bielefeld Geometry & Topology Days },
  year = { 2016 },
  pages = {  },
  URL = { https://gecogedi.dimai.unifi.it/paper/90/ },
  note = { cvgmt preprint}
}