@misc{1155716,
  author = {Helmut Hellwig},
  title = {The ion storage technique for application in frequency standards:},
  year = {1970},
  month = {1970-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NBS.TN.388},
  language = {en},
}