diff --git a/mammalia.csl b/mammalia.csl
index 23116cb37ca..6c6b643063f 100644
--- a/mammalia.csl
+++ b/mammalia.csl
@@ -5,8 +5,7 @@
     <id>http://www.zotero.org/styles/mammalia</id>
     <link href="http://www.zotero.org/styles/mammalia" rel="self"/>
     <link href="http://www.zotero.org/styles/genetics" rel="template"/>
-    <link href="https://www.degruyter.com/view/journals/mamm/mamm-overview.xml?tab_body=editorialContent-68857" rel="documentation"/>
-    <link href="https://www.degruyter.com/supplemental/journals/mamm/mamm-overview.xml/Instructions_for_Authors.pdf" rel="documentation"/>
+    <link href="https://www.degruyter.com/publication/journal_key/MAMM/downloadAsset/MAMM_Instructions_for_Authors.pdf" rel="documentation"/>
     <author>
       <name>Patrick O'Brien</name>
     </author>
@@ -15,7 +14,7 @@
     <issn>0025-1461</issn>
     <eissn>1864-1547</eissn>
     <summary>Style for Mammalia as per the guidelines from October 1, 2020.</summary>
-    <updated>2021-01-11T13:22:22+00:00</updated>
+    <updated>2021-04-21T09:13:35+00:00</updated>
     <rights license="http://creativecommons.org/licenses/by-sa/3.0/">This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 License</rights>
   </info>
   <macro name="editor-translator">
@@ -26,7 +25,7 @@
   </macro>
   <macro name="author">
     <names variable="author">
-      <name and="text" initialize-with="." name-as-sort-order="all" sort-separator=" "/>
+      <name and="text" initialize-with="." name-as-sort-order="all"/>
       <label form="short" prefix=" (" suffix=")" text-case="capitalize-first"/>
       <substitute>
         <names variable="editor"/>
@@ -100,8 +99,8 @@
   </macro>
   <citation collapse="year-suffix" et-al-min="3" et-al-use-first="1" disambiguate-add-year-suffix="true">
     <sort>
-      <key variable="issued"/>
       <key variable="author"/>
+      <key variable="issued"/>
     </sort>
     <layout prefix="(" suffix=")" delimiter="; ">
       <group delimiter=" ">