SpatialExperiment is described in the following publication:

  Righelli, Weber, and Crowell et al. (2022). SpatialExperiment:
  infrastructure for spatially-resolved transcriptomics data in R using
  Bioconductor. Bioinformatics, 38(11), 3128-3131.

A BibTeX entry for LaTeX users is

  @Article{,
    title = {SpatialExperiment: infrastructure for spatially-resolved transcriptomics data in R using Bioconductor},
    author = {Dario Righelli and Lukas M. Weber and Helena L. Crowell and Brenda Pardo and Leonardo Collado-Torres and Shila Ghazanfar and Aaron T. L. Lun and Stephanie C. Hicks and Davide Risso},
    journal = {Bioinformatics},
    year = {2022},
    volume = {38},
    number = {11},
    pages = {-3},
    doi = {https://doi.org/10.1093/bioinformatics/btac299},
  }