--- a/RelaxNG/publiset.rnc	dim. juin 05 23:51:15 2011 +0200
+++ b/RelaxNG/publiset.rnc	lun. juin 06 21:51:00 2011 +0200
@@ -70,9 +70,12 @@
    remap.attributes
 
 metadata.content =
-   title?,
-   subtitle?,
-   source?
+   title?
+ & subtitle?
+ & author*
+ & publisher?
+ & language?
+ & source?
 
 # ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ title, subtitle ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
@@ -82,6 +85,37 @@
 
 subtitle = element subtitle { title.content }
 
+# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ author, publisher ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+# ~~~~~~ author
+author = element author { author.content }
+
+author.content =
+   firstname?,
+   lastname
+
+# ~~~~~~ publisher
+publisher = element publisher { publisher.content }
+
+publisher.content = inlines
+
+# ~~~~~~ firstname
+firstname = element firstname { firstname.content }
+
+firstname.content = inlines
+
+# ~~~~~~ lastname
+lastname = element lastname { lastname.content }
+
+lastname.content = inlines
+
+# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Language ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+language = element language { language.attributes }
+
+language.attributes = lang.attribute
+lang.attribute = attribute xml:lang { xsd:language }
+
 # ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ source ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 # ~~~~~~ source