@Article{ 
  ANOASH22,
  author = { ANOOP, T. V. and ASHOK KUMAR, K },
  title = { Domain variations of the first eigenvalue via a strict Faber-Krahn type inequality },
  journal = { Advances in Differential Equations },
  year = { 2023 },
  doi = { https://doi.org/10.57262/ade028-0708-537 },
  volume = { 28 },
  number = { 7-8 },
  pages = { 537-568 },
  URL = { http://cvgmt.sns.it/paper/5439/ },
  note = { cvgmt preprint}
}