@misc{indiciae634e11cd6bdc,
  title = {Dielectric function and collective modes of two-dimensional interacting bosons.},
  author = {DM Kachintsev and SE Ulloa},
  year = {1994},
  doi = {10.1103/physrevb.50.8715},
  url = {https://pubmed.ncbi.nlm.nih.gov/9974891/},
  note = {Source identifier: 9974891}
}