@Article{ 
  BonCriTop21,
  author = { Bonacini, Marco and Cristoferi, Riccardo and Topaloglu, Ihsan },
  title = { Riesz-type inequalities and overdetermined problems for triangles and   quadrilaterals },
  journal = { J. Geom. Anal. },
  year = { 2022 },
  doi = { https://doi.org/10.1007/s12220-021-00737-7 },
  volume = { 32 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/5058/ },
  note = { cvgmt preprint}
}