To cite SAVER in publications use:

  Huang, M., Wang, J., Torre, E., Dueck, H., Shaffer, S., Bonasio, R.,
  ..., Zhang, N. R. (2018). SAVER: gene expression recovery for
  single-cell RNA sequencing. Nature Methods, 15(7), 539–542.
  https://doi.org/10.1038/s41592-018-0033-z

A BibTeX entry for LaTeX users is

  @Article{,
    title = {SAVER: gene expression recovery for single-cell RNA sequencing},
    author = {Mo Huang and Jingshu Wang and Eduardo Torre and Hannah Dueck and Sydney Shaffer and Roberto Bonasio and John I Murray and Arjun Raj and Mingyao Li and Nancy R Zhang},
    journal = {Nature Methods},
    volume = {15},
    number = {7},
    pages = {539--542},
    year = {2018},
    doi = {10.1038/s41592-018-0033-z},
    issn = {1548-7105},
    url = {https://doi.org/10.1038/s41592-018-0033-z},
  }