diff --git a/literature.bib b/literature.bib
index 98453db..41b8017 100644
--- a/literature.bib
+++ b/literature.bib
@@ -176,7 +176,7 @@ @online{Wheeler2014
 
 @online{Matt2009,
 	title = {Why {CC} {BY}-{SA} is Unsuitable},
-	url = {https://osmfoundation.org/wiki/Licence_and_Legal_FAQ/Why_CC_BY-SA_is_Unsuitable},
+	url = {https://osmfoundation.org/w/index.php?title=Licence_and_Legal_FAQ/Why_CC_BY-SA_is_Unsuitable&oldid=3927},
 	titleaddon = {{OpenStreetMap} Foundation},
 	author = {{Matt}},
 	urldate = {2024-09-02},
@@ -225,7 +225,7 @@ @misc{Klimpel2013
 
 @online{ODI2015,
 	title = {What are the impacts of non-open licences?},
-	url = {https://theodi.org/insights/guides/what-are-the-impacts-of-non-open-licences/?saved},
+	url = {https://theodi.org/insights/guides/what-are-the-impacts-of-non-open-licences/},
 	abstract = {This guide outlines the key considerations that inform licensing decisions},
 	author = {{Open Data Institute}},
 	urldate = {2024-09-03},
@@ -399,7 +399,7 @@ @collection{Kreutzer2014
 
 @online{CC2015,
 	title = {{ShareAlike} compatibility analysis: {GPL}},
-	url = {https://wiki.creativecommons.org/wiki/ShareAlike_compatibility_analysis:_GPL},
+	url = {https://wiki.creativecommons.org/index.php?title=ShareAlike_compatibility_analysis:_GPL&oldid=114476},
 	author = {{Creative Commons}},
 	urldate = {2024-09-03},
 	date = {2015-08-08}
@@ -526,7 +526,7 @@ @online{Stallman2022NoLimit
 
 @online{Moller2023,
 	title = {The case for Free use: reasons not to use a Creative Commons -{NC} license},
-	url = {https://freedomdefined.org/Licenses/NC},
+	url = {https://freedomdefined.org/index.php?title=Licenses/NC&oldid=27327},
 	author = {Möller, Erik},
 	urldate = {2024-09-21},
 	date = {2023-12-15},
@@ -541,4 +541,11 @@ @online{Fogel2006
 	urldate = {2024-09-21},
 	date = {2006-05-27},
 	langid = {american},
+}
+@online{UKGovernment2020,
+	title = {Quality assurance of code for analysis and research},
+	url = {https://best-practice-and-impact.github.io/qa-of-code-guidance/},
+	urldate = {2024-11-26},
+	author = {{UK Government Analytical Community}},
+	year = {2020},
 }
\ No newline at end of file
diff --git a/setup.qmd b/setup.qmd
index 987e3a7..7086a3c 100644
--- a/setup.qmd
+++ b/setup.qmd
@@ -221,7 +221,7 @@ vals <- list(
 )
 ```
 
-Generally, metadata are either stored embedded into the data or externally, for example, in a separate file. We will use the "[frictionless data](https://frictionlessdata.io/)" standard, where metadata are stored separately.
+Generally, metadata are either stored embedded into the data or externally, for example, in a separate file. We will use the "[frictionless data](https://frictionlessdata.io/)" standard, where metadata are stored separately. Another alternative would be [RO-Crate](https://www.researchobject.org/ro-crate/).
 
 Specifically, one can use the R package [`frictionless`](https://docs.ropensci.org/frictionless/) to create a _schema_ which describes the structure of the data. For the purpose of the following code, it is just a nested list that we edit to include our own information. We also explicitly record in the schema that missing values are stored in the data file as `NA` and that the data are licensed under [CC0\ 1.0](https://creativecommons.org/publicdomain/zero/1.0/). Finally, the package is used to create a metadata file that contains the schema.
 
@@ -421,6 +421,7 @@ This is only a brief summary and there is much more to be learned about coding p
 
 - "Tidy design principles" [@Wickham2023Design]
 - "The Good Research Code Handbook" [@Mineault2021]
+- "Quality assurance of code for analysis and research" [@UKGovernment2020]
 - "The Art of UNIX Programming" [@Raymond2003]
 
 > "Any fool can write code that a computer can understand. Good programmers write code that humans can understand."