Maintainer: ‘George Weigt <g808391@icloud.com>’

No Authors@R field in DESCRIPTION.
Please add one, modifying
  Authors@R: person(given = "George",
                    family = "Weigt",
                    role = c("aut", "cre"),
                    email = "g808391@icloud.com")
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The Description field contains
  Davis. <https://link.springer.com/book/10.1007/b97391>.
Please use permanent DOI markup for linking to publications as in <doi:prefix/suffix>.
Maintainer: ‘George Weigt <g808391@icloud.com>’

No Authors@R field in DESCRIPTION.
Please add one, modifying
  Authors@R: person(given = "George",
                    family = "Weigt",
                    role = c("aut", "cre"),
                    email = "g808391@icloud.com")
as necessary.

The Description field contains
  Davis. <https://link.springer.com/book/10.1007/b97391>.
Please use permanent DOI markup for linking to publications as in <doi:prefix/suffix>.