update references DuCharme2013 Heath2011: add file link

1 files changed, 2 insertions, 0 deletions

diff --git a/ref.bib b/ref.bib
index c7c41ca..ae88732 100644
--- a/ref.bib
+++ b/ref.bib
@@ -516,6 +516,7 @@
   URL =          "https://www.learningsparql.com/",
   urldate =      "2024-05-06",
   edition =      "2",
+  file =         ":DuCharme2013 - Learning SPARQL.pdf:PDF",
   ISBN =         "978-1-4493-7143-2",
   publisher =    "O'Reilly Media",
 }
@@ -633,6 +634,7 @@
   ISBN =         "978-3-031-79432-2",
   language =     "engelsk",
   publisher =    "Springer International Publishing",
+  file =         ":Heath2011 - Linked Data_ Evolving the Web into a Global Data Space.pdf:PDF",
   ISSN =         "2691-2031",
   journaltitle = "Synthesis Lectures on Data, Semantics, and Knowledge",
 }