From ed01878a3b25bbbd471bd1e541f5d2ad5dbf1ab4 Mon Sep 17 00:00:00 2001
From: Jonas Smedegaard <dr@jones.dk>
Date: Mon, 6 May 2024 00:11:49 +0200
Subject: fix and update DuCharme reference

---
 ref.bib              | 17 +++++++----------
 worlding/_kilder.qmd |  2 +-
 2 files changed, 8 insertions(+), 11 deletions(-)

diff --git a/ref.bib b/ref.bib
index 9e66c0e..c072d70 100644
--- a/ref.bib
+++ b/ref.bib
@@ -65,18 +65,15 @@
   pages =        "19--43",
 }
 
-@Article{DuCharme_2011,
+@Booklet{DuCharme_2013,
   author =       "Bob {DuCharme}",
-  copyright =    "COPYRIGHT 2011 Ringgold, Inc.",
-  ISSN =         "0887-3763",
-  journaltitle = "Reference & Research Book News",
+  ISBN =         "978-1-4493-7143-2",
   language =     "en",
-  number =       "6",
-  publisher =    "Ringgold, Inc",
-  address =      "Portland",
-  title =        "Learning {SPARQL}; querying and updating with {SPARQL} 1.1",
-  volume =       "26",
-  date =         "2011",
+  publisher =    "O'Reilly Media",
+  title =        "Learning {SPARQL}",
+  subtitle =     "querying and updating with {SPARQL} 1.1",
+  edition =      "2",
+  date =         "2013-08-13",
 }
 
 @Book{Ebersbach_2006,
diff --git a/worlding/_kilder.qmd b/worlding/_kilder.qmd
index de99d42..5820ac7 100644
--- a/worlding/_kilder.qmd
+++ b/worlding/_kilder.qmd
@@ -5,7 +5,7 @@
 @Allemang_2020, @Pontis_2015, @Pressman_2018_book, @Sahli_2022,
 @Springer_2017_ESWC_remote, @Nielsen_2017, @Springer_2021_ISWC,
 @Fathalla_2023, @Couch_2015, @Heath_2011,
-@DuCharme_2011 og @Janowicz_2014.
+@DuCharme_2013 og @Janowicz_2014.
 
 <https://www.authorea.com/users/6341/articles/107281>
 om definition af begrebet "vidensgraf".
-- 
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