diff --git a/app/assets/scripts/components/documents/journal-pdf-preview/index.js b/app/assets/scripts/components/documents/journal-pdf-preview/index.js
index 8deba358..7e8bfffe 100644
--- a/app/assets/scripts/components/documents/journal-pdf-preview/index.js
+++ b/app/assets/scripts/components/documents/journal-pdf-preview/index.js
@@ -114,9 +114,8 @@ const DocumentHeading = styled.h1`
 const AuthorsSection = styled.div`
   display: flex;
   flex-direction: column;
-  gap: 2rem;
-`;
-const AuthorsSectionHeader = styled.div`
+  align-items: center;
+  gap: 1.5rem;
   text-align: center;
 `;
 
@@ -594,7 +593,7 @@ function JournalPdfPreview() {
         <PreviewContainer ref={contentRef}>
           <DocumentHeading> {resolveTitle(atbd.title)} </DocumentHeading>
           <AuthorsSection>
-            <AuthorsSectionHeader>{contacts?.items}</AuthorsSectionHeader>
+            <div>{contacts?.items}</div>
             <div>
               {contacts?.affiliations_list.map((affiliation, i) => (
                 // eslint-disable-next-line react/no-array-index-key
@@ -815,7 +814,7 @@ function JournalPdfPreview() {
             </Section>
           )}
           {referencesVisible && (
-            <Section id='references' title='References'>
+            <Section id='references' title='References' skipNumbering>
               <ReferencesList>{referenceList}</ReferencesList>
             </Section>
           )}
diff --git a/app/assets/scripts/components/documents/pdf-preview/index.js b/app/assets/scripts/components/documents/pdf-preview/index.js
index 8c621910..9b1f2d0d 100644
--- a/app/assets/scripts/components/documents/pdf-preview/index.js
+++ b/app/assets/scripts/components/documents/pdf-preview/index.js
@@ -10,6 +10,7 @@ import DocumentTitle from '../single-view/document-title';
 import { DocumentProse } from '../single-view/document-content';
 import { ScrollAnchorProvider } from '../single-view/scroll-manager';
 import { applyNumberCaptionsToDocument } from '../../../utils/apply-number-captions-to-document';
+import { isDefined } from '../../../utils/common';
 
 const TocHeader = styled.h1`
   border-bottom: 3px solid #000;
@@ -65,7 +66,6 @@ function generateTocAndHeadingNumbering(content) {
     currentHeading,
     currentLevel,
     sectionContainer,
-    parentContainer,
     parentHeadingNumber
   ) {
     const currentSubHeadings = [];
@@ -148,7 +148,6 @@ function generateTocAndHeadingNumbering(content) {
           subHeading,
           currentLevel + 1,
           subHeadingSections,
-          subHeading.parentNode,
           headingNumber
         );
       });
@@ -192,13 +191,7 @@ function generateTocAndHeadingNumbering(content) {
 
       const sectionTitle = getTitleElement(heading.id, heading.innerText);
       section.append(sectionTitle);
-      generateSubHeadings(
-        heading,
-        2,
-        section,
-        heading.parentNode,
-        headingNumber
-      );
+      generateSubHeadings(heading, 2, section, headingNumber);
     });
   }
 
@@ -239,11 +232,11 @@ function PdfPreview() {
       setPreviewReady(true);
     }
 
-    if (atbd.status === 'succeeded') {
+    if (atbd.status === 'succeeded' && isDefined(atbd.data)) {
       setDocument(applyNumberCaptionsToDocument(atbd.data.document));
       waitForImages();
     }
-  }, [atbd.status]);
+  }, [atbd.data, atbd.status]);
 
   // This useEffect is responsible for generating the ToC and numbering
   // after the document is transformed
diff --git a/app/assets/scripts/components/documents/single-view/document-body.js b/app/assets/scripts/components/documents/single-view/document-body.js
index 0c1408d7..903f95a3 100644
--- a/app/assets/scripts/components/documents/single-view/document-body.js
+++ b/app/assets/scripts/components/documents/single-view/document-body.js
@@ -512,7 +512,7 @@ const htmlAtbdContentSections = [
         ),
         children: [
           {
-            label: 'Assumptions',
+            label: 'Scientific Theory Assumptions',
             id: 'scientific_theory_assumptions',
             editorSubsections: (document, { id }) =>
               subsectionsFromSlateDocument(
@@ -557,7 +557,7 @@ const htmlAtbdContentSections = [
         ),
         children: [
           {
-            label: 'Assumptions',
+            label: 'Mathematical Theory Assumptions',
             id: 'mathematical_theory_assumptions',
             editorSubsections: (document, { id }) =>
               subsectionsFromSlateDocument(
@@ -695,12 +695,12 @@ const htmlAtbdContentSections = [
     )
   },
   {
-    label: 'Performance Assessment Validation',
+    label: 'Performance Assessment',
     id: 'validation',
     render: AtbdSectionPassThrough,
     children: [
       {
-        label: 'Performance Assessment Validation Methods',
+        label: 'Validation Methods',
         id: 'validation_method',
         editorSubsections: (document, { id }) =>
           subsectionsFromSlateDocument(
@@ -720,7 +720,7 @@ const htmlAtbdContentSections = [
         )
       },
       {
-        label: 'Performance Assessment Validation Uncertainties',
+        label: 'Uncertainties',
         id: 'validation_uncert',
         editorSubsections: (document, { id }) =>
           subsectionsFromSlateDocument(
@@ -742,7 +742,7 @@ const htmlAtbdContentSections = [
         )
       },
       {
-        label: 'Performance Assessment Validation Errors',
+        label: 'Validation Errors',
         id: 'validation_err',
         editorSubsections: (document, { id }) =>
           subsectionsFromSlateDocument(
@@ -764,12 +764,12 @@ const htmlAtbdContentSections = [
     ]
   },
   {
-    label: 'Data Access',
+    label: 'Algorithm Implementation',
     id: 'data_access',
     render: AtbdSectionPassThrough,
     children: [
       {
-        label: 'Input Data Data Access',
+        label: 'Input Data Access',
         id: 'data_access_input_data',
         render: (props) => (
           <FragmentWithOptionalEditor
@@ -804,7 +804,7 @@ const htmlAtbdContentSections = [
         }
       },
       {
-        label: 'Output Data Data Access',
+        label: 'Output Data Access',
         id: 'data_access_output_data',
         render: (props) => (
           <FragmentWithOptionalEditor
@@ -998,7 +998,7 @@ const htmlAtbdContentSections = [
     ]
   },
   {
-    label: 'Contacts',
+    label: 'Contact Details',
     id: 'contacts',
     render: ({ element, children, atbd, printMode }) => (
       <AtbdSection
@@ -1219,7 +1219,7 @@ const pdfAtbdContentSections = [
     )
   },
   {
-    label: 'Contacts',
+    label: 'Contact Details',
     id: 'contacts',
     render: ({ element, children, atbd, printMode }) => (
       <AtbdSection
diff --git a/app/assets/scripts/components/documents/single-view/document-title.js b/app/assets/scripts/components/documents/single-view/document-title.js
index 86c3e49c..d24fc21a 100644
--- a/app/assets/scripts/components/documents/single-view/document-title.js
+++ b/app/assets/scripts/components/documents/single-view/document-title.js
@@ -19,6 +19,7 @@ const DocumentHeader = styled.header`
 `;
 
 const DocumentHeading = styled(Heading)`
+  text-align: center;
   margin: 0;
 `;