R help - Nov 2008 - CITATION file with multiple citEntry(): no BibTeX produced by citation()

[Using R 2.8.0 / Win XP / ]

I just added a CITATION file to the heplots package--- appended below.
 From the document ion for ?CITATION, there can be *one or more* calls to
citEntry() within the CITATION file, and each should produce an object
of class "citation".
With just a single citEntry(), citation produces the expected output, 
with BibTeX entry:

 > citation("heplots")

To cite package 'heplots' in publications use:

  John Fox and Michael Friendly and and Georges Monette (2008).
  heplots: Visualizing Tests in Multivariate Linear Models. R package
  version 0.8-4. URL http://CRAN.R-project.org/package=heplots

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {{heplots}: Visualizing Tests in Multivariate Linear Models},
    author = {John Fox and Michael Friendly and Georges Monette},
    year = {2008},
    note = {R package version 0.8-4},
    url = {http://CRAN.R-project.org/package=heplots},
  }

If I uncomment the second citEntry() in CITATION below and 
rebuild/INSTALL, the BibTeX entries
are not produced, though I get both text versions:

 > citation("heplots")

To cite package 'heplots' in publications use:

  John Fox and Michael Friendly and and Georges Monette (2008).
  heplots: Visualizing Tests in Multivariate Linear Models. R package
  version 0.8-4. URL http://CRAN.R-project.org/package=heplots

  Friendly, M. (2007).  HE plots for Multivariate General Linear
  Models.  Journal of Computational and Graphical Statistics, 2007, 16,
  421-444

Did I miss something or is this a bug in citation()?

-Michael


---- begin CITATION ----
citHeader("To cite package 'heplots' in publications use:")

## R >= 2.8.0 passes package metadata to citation().
if(!exists("meta") || is.null(meta)) meta <-
packageDescription("heplots")
year <- sub("-.*", "", meta$Date)
note <- sprintf("R package version %s", meta$Version)
    
citEntry(entry = "Manual",
  title = "{heplots}: Visualizing Tests in Multivariate Linear
Models",
  author = personList(as.person("John Fox"),
                  as.person("Michael Friendly"),
                  as.person("Georges Monette")),
  year = year,
  note = note,
  url = "http://CRAN.R-project.org/package=heplots",

  textVersion   paste("John Fox and Michael Friendly and and Georges
Monette",
       sprintf("(%s).", year),
        "heplots: Visualizing Tests in Multivariate Linear Models.",
    paste(note, ".", sep = ""),
        "URL http://CRAN.R-project.org/package=heplots")
)

#citEntry(entry="Article",
#  title =      "HE plots for Multivariate General Linear Models",
#  author =      "Michael Friendly",
#  year =      "2007",
#  journal =      "Journal of Computational and Graphical Statistics",
#  volume = "16",
#  number = "4",
#  pages = "421-444",
#  textVersion = "Friendly, M. (2007).
#  HE plots for Multivariate General Linear Models.
#  Journal of Computational and Graphical Statistics, 2007, 16, 421-444" 
#)

---- end CITATION ----

-- 
Michael Friendly     Email: friendly AT yorku DOT ca 
Professor, Psychology Dept.
York University      Voice: 416 736-5115 x66249 Fax: 416 736-5814
4700 Keele Street    http://www.math.yorku.ca/SCS/friendly.html
Toronto, ONT  M3J 1P3 CANADA

On Mon, 17 Nov 2008, Michael Friendly wrote:
> [Using R 2.8.0 / Win XP / ]
>
> I just added a CITATION file to the heplots package--- appended below.
> From the document ion for ?CITATION, there can be *one or more* calls to
> citEntry() within the CITATION file, and each should produce an object
> of class "citation".
>
> If I uncomment the second citEntry() in CITATION below and rebuild/INSTALL,
> the BibTeX entries are not produced,
>
> Did I miss something
Yes, the documentation :-)
?citation says
      If only one reference is given, the print method shows both a text
      version and a BibTeX entry for it, if a package has more than one
      reference then only the text versions are shown. The BibTeX
      versions can be obtained using function 'toBibtex' (see the
      examples below).

See for example
   citation("sandwich")
   toBibtex(citation("sandwich"))

To produce the header for the second entry, you can use the header 
argument:
   citEntry(..., header = "...")

Best,
Z