diff --git a/sok/admin.py b/sok/admin.py
index df0d3ff..415c523 100644
--- a/sok/admin.py
+++ b/sok/admin.py
@@ -64,6 +64,7 @@ class PublicationStageFilter(admin.SimpleListFilter):
 		return (
 			('primary', _("primary")),
 			('secondary', _("secondary")),
+			('2-secondary', _("2-secondary")),
 			('tertiary', _("tertiary")),
 			('excluded', _("excluded")),
 			('-', _("-")),
@@ -95,6 +96,14 @@ class PublicationStageFilter(admin.SimpleListFilter):
 				referenced_by__sources__isnull=False,
 			)
 
+		if self.value() == '2-secondary':
+			ids: Set[int] = {
+				publication.id
+				for publication in queryset
+				if publication.stage == '2-secondary'
+			}
+			return queryset.filter(id__in=ids)
+
 		if self.value() == '-':
 			ids: Set[int] = {
 				publication.id
diff --git a/sok/management/commands/snowball.py b/sok/management/commands/snowball.py
index 58d3698..a3356ec 100644
--- a/sok/management/commands/snowball.py
+++ b/sok/management/commands/snowball.py
@@ -124,12 +124,12 @@ class Command(BaseCommand):
 					if created:
 						self.echo(f"Added author: {author}")
 					else:
-						self.echo(f"Author '{author}' alreay known")
+						self.echo(f"Author '{author}' already known")
 					authors.append(author)
-				cite_key = ''
-				if authors:
-					cite_key = authors[0].name.split(' ')[-1]
-				cite_key += str(data.get('year'))
+			cite_key = ''
+			if authors:
+				cite_key = authors[0].name.split(' ')[-1]
+			cite_key += str(data.get('year'))
 
 			title = data.get('title', '')
 			cite_key += title.split(' ')[0]
@@ -147,20 +147,20 @@ class Command(BaseCommand):
 			# Add publication to database
 			doi = data.get('doi', None)
 			if not publication:
-				self.echo(f"Will create now with cite key {cite_key}")
 				publication = Publication.objects.create(
 					cite_key=cite_key,
 					title=title,
 					year=data.get('year', 0),
 					peer_reviewed=None,
 					doi=doi,
+					abstract=data.get('abstract', None),
 				)
 				self.echo(f"Added publication: {publication}")
 			else:
 				self.echo(f"Publication '{publication}' already known")
 
 			# Assign authors
-			for position, author in enumerate(authors):
+			for position, author in enumerate(list(set(authors))):
 				publication_author, created = PublicationAuthor.objects.get_or_create(
 					author=author,
 					publication=publication,
@@ -242,11 +242,11 @@ class Command(BaseCommand):
 					if abstract := data.get('abstract', None):
 						self.echo(abstract)
 				elif choice in {'', 'n', 'no'}:
-					# TODO Import? copied and adapted from PR
+					# DONE Import? copied and adapted from PR
 					if paper_id is not None:
 						self.add_publ(paper_id, base, is_reference)
 					else:
-						self.echo("Could not add this paper, please do it manually!")
+						self.warn("Could not add this paper, please do it manually!")
 					break
 
 	# BaseCommand
@@ -255,11 +255,13 @@ class Command(BaseCommand):
 		parser.add_argument('--reset-choices', action='store_true')
 		parser.add_argument('--no-references', action='store_true')
 		parser.add_argument('--no-citations', action='store_true')
+		parser.add_argument('-s', '--stage', type=int, default=10000)
 
 	def handle(self, *args, **options):
 		reset_choices: bool = options['reset_choices']
 		no_citations: bool = options['no_citations']
 		no_references: bool = options['no_references']
+		stage: int = options['stage']
 
 		self.cache_path = Path('.choices.semanticscholar.pickle')
 		self.cache: Set[str] = set()
@@ -275,9 +277,12 @@ class Command(BaseCommand):
 			semanticscholar__isnull=False,
 			exclusion_criteria__isnull=True,
 		)
+		if stage < 10000:
+			publications = [p for p in publications if p.stage_added() == stage]
+			self.echo(f"==== {len(publications)} publications from stage {stage} will be shown ====")
 		try:
 			for publication in tqdm(publications, unit="publication"):
-				self.echo(f"=== Publication {publication} ===")
+				self.echo(f"=== Publication {publication}: {publication.title} ===")
 				for semantic in publication.semanticscholar_set.all():
 					data = semanticscholar(semantic.paper_id)