http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
... Revision of the shrews of the American genera Blarina and Notiosorex
The longtailed shrews of the eastern United States. Gerrit S. Miller, jr. Synopsis of the American shrews of the genus sorex. C. Hart Merriam.