c(person("Brian", "Ripley", role = c("aut", "cre"),
                    email = "ripley@stats.ox.ac.uk"),
             person("Michael", "Lapsley", role = "aut", 
	            comment = "1999 to Oct 2002"))
Brian Ripley [aut, cre],
  Michael Lapsley [aut] (1999 to Oct 2002)