diff --git a/publications/bulletins/MRL-0005-ringct/biblio.bib b/publications/bulletins/MRL-0005-ringct/biblio.bib
index 29446cb..dac6b94 100644
--- a/publications/bulletins/MRL-0005-ringct/biblio.bib
+++ b/publications/bulletins/MRL-0005-ringct/biblio.bib
@@ -64,7 +64,7 @@ @misc{GMc
 @misc{GM, 
   title={{Confidential Transactions}}, 
   author={Maxwell, Greg},
-  howpublished = {\url{https://people.xiph.org/~greg/confidential_values.txt}},
+  howpublished = {\url{https://web.archive.org/web/20200502151159/https://people.xiph.org/~greg/confidential_values.txt}},
   year = {2015}, 
   note = "[Online; accessed 1-June-2015]"
 }
@@ -91,7 +91,7 @@ @misc {mrl4
     title  = "Improving Obfuscation in the CryptoNote Protocol",
     month  = "January",
     year   = "2015",
-    howpublished  =  {\url{"https://lab.getmonero.org/pubs/MRL-0004.pdf"}}
+    howpublished  =  {\url{"https://web.getmonero.org/es/resources/research-lab/pubs/MRL-0004.pdf"}}
 }
 
 @incollection{RST,
diff --git a/whitepaper/ge_fromfe_writeup/refs.bib b/whitepaper/ge_fromfe_writeup/refs.bib
index b55486f..743d0d4 100644
--- a/whitepaper/ge_fromfe_writeup/refs.bib
+++ b/whitepaper/ge_fromfe_writeup/refs.bib
@@ -64,7 +64,7 @@ @misc{GMc
 @misc{GM, 
   title={{Confidential Transactions}}, 
   author={Maxwell, Greg},
-  howpublished = {\url{https://people.xiph.org/~greg/confidential_values.txt}},
+  howpublished = {\url{https://web.archive.org/web/20200502151159/https://people.xiph.org/~greg/confidential_values.txt}},
   year = {2015}, 
   note = "[Online; accessed 1-June-2015]"
 }
@@ -91,7 +91,7 @@ @misc{mrl4
     title  = {"Improving Obfuscation in the CryptoNote Protocol"},
     month  = {"jan"},
     year   = {"2015"},
-    howpublished =  {\url{"https://lab.getmonero.org/pubs/MRL-0004.pdf"}}
+    howpublished =  {\url{"https://web.getmonero.org/es/resources/research-lab/pubs/MRL-0004.pdf"}}
 }
 
 @incollection{RST,