@misc{indiciae6f4be4bab4fc,
  title = {Wave-packet evolution and quantization.},
  author = {RG Littlejohn},
  year = {1986},
  doi = {10.1103/physrevlett.56.2000},
  url = {https://pubmed.ncbi.nlm.nih.gov/10032832/},
  note = {Source identifier: 10032832}
}