Using Linked Micromap Plots to Characterize Omernik Ecoregions. - Daniel B. Carr; Anthony R. Olsen; Suzanne M. Pierson; Jean-Yves P. Courbois (Data Min. Knowl. Discov., 2000)

spsurvey: Spatial Sampling Design and Analysis in R. - Michael Dumelle; Tom Kincaid; Anthony R. Olsen; Marc Weber (J. Stat. Softw., 2023)