@misc{indiciae9715aa8446ef,
  title = {Berry phase in Heisenberg representation},
  author = {Andreev, V. A. and Klimov, Andrei B. and Lerner, Peter B.},
  year = {1994},
  url = {https://ntrs.nasa.gov/citations/19950007539},
  note = {Source identifier: 19950007539}
}