@Misc{ 
  May21,
  author = { Mayer, Martin },
  title = { Prescribing Morse scalar curvatures: incompatibility of non existence },
  journal = {  },
  year = { 2021 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/5980/ },
  note = { cvgmt preprint}
}