diff --git a/composer.json b/composer.json
index 1de6224..27138ad 100644
--- a/composer.json
+++ b/composer.json
@@ -1,7 +1,7 @@
 {
     "name": "kiwilan/php-ebook",
     "description": "PHP package to read metadata and extract covers from eBooks, comics and audiobooks.",
-    "version": "2.3.7",
+    "version": "2.3.8",
     "keywords": [
         "php",
         "ebook",
diff --git a/src/Ebook.php b/src/Ebook.php
index fc97a2d..3d2531c 100755
--- a/src/Ebook.php
+++ b/src/Ebook.php
@@ -114,6 +114,7 @@ public static function read(string $path): ?self
         $self->convertEbook();
         $self->cover = $self->parser->getModule()->toCover();
         $self->metaTitle = MetaTitle::fromEbook($self);
+        $self->clean();
 
         $time = microtime(true) - $start;
         $self->execTime = (float) number_format((float) $time, 5, '.', '');
@@ -255,6 +256,30 @@ private function pdf(): EbookModule
         return PdfModule::make($this);
     }
 
+    private function clean(): self
+    {
+        $authors = [];
+        foreach ($this->authors as $author) {
+            if (! $author->getName()) {
+                continue;
+            }
+
+            $authors[] = $author;
+        }
+
+        $this->authors = $authors;
+
+        if ($this->authorMain && ! $this->authorMain->getName()) {
+            $this->authorMain = null;
+
+            if (count($this->authors) > 0) {
+                $this->authorMain = reset($this->authors);
+            }
+        }
+
+        return $this;
+    }
+
     private function convertEbook(): self
     {
         $ebook = $this->parser->getModule()->toEbook();
diff --git a/src/Formats/Epub/EpubModule.php b/src/Formats/Epub/EpubModule.php
index 8895fc4..fb5c37b 100644
--- a/src/Formats/Epub/EpubModule.php
+++ b/src/Formats/Epub/EpubModule.php
@@ -99,8 +99,8 @@ public function toEbook(): Ebook
         $this->ebook->setTags($tags);
 
         $rating = null;
-        if (! empty($this->opf->getMeta())) {
-            foreach ($this->opf->getMeta() as $meta) {
+        if (! empty($this->opf->getMetaItems())) {
+            foreach ($this->opf->getMetaItems() as $meta) {
                 if ($meta->getName() === 'calibre:series') {
                     $this->ebook->setSeries($meta->getContents());
                 }
diff --git a/src/Formats/Epub/Parser/OpfItem.php b/src/Formats/Epub/Parser/OpfItem.php
index 5401c70..b60bb81 100644
--- a/src/Formats/Epub/Parser/OpfItem.php
+++ b/src/Formats/Epub/Parser/OpfItem.php
@@ -298,11 +298,33 @@ public function getDcLanguage(): ?string
     }
 
     /**
+     * @deprecated Use `getMetaItems` instead.
+     *
      * @return BookMeta[]
      */
     public function getMeta(): array
     {
-        return $this->meta;
+        return $this->getMetaItems();
+    }
+
+    /**
+     * @return BookMeta[]
+     */
+    public function getMetaItems(): array
+    {
+        $items = [];
+        foreach ($this->meta as $item) {
+            $items[$item->getName()] = $item;
+        }
+
+        return $items;
+    }
+
+    public function getMetaItem(string $key): ?BookMeta
+    {
+        $meta = array_filter($this->meta, fn (BookMeta $item) => $item->getName() === $key);
+
+        return array_shift($meta);
     }
 
     public function getCoverPath(): ?string
diff --git a/tests/OpfTest.php b/tests/OpfTest.php
index 78e1d78..61290bb 100644
--- a/tests/OpfTest.php
+++ b/tests/OpfTest.php
@@ -2,6 +2,7 @@
 
 use Kiwilan\Ebook\Formats\Epub\Parser\EpubContainer;
 use Kiwilan\Ebook\Formats\Epub\Parser\OpfItem;
+use Kiwilan\Ebook\Models\BookMeta;
 use Kiwilan\XmlReader\XmlReader;
 
 it('can parse epub container', function (string $path) {
@@ -38,11 +39,56 @@
     expect($opf->getDcIdentifiers())->toBeArray();
     expect($opf->getDcSubject())->toBeArray();
     expect($opf->getDcLanguage())->toBeString();
-    expect($opf->getMeta())->toBeArray();
+    expect($opf->getMetaItems())->toBeArray();
     expect($opf->getCoverPath())->toBeString();
     expect($opf->getEpubVersion())->toBeGreaterThanOrEqual(2);
 })->with([EPUB_OPF_EPUB2, EPUB_OPF_EPUB3, EPUB_OPF_INSURGENT, EPUB_OPF_LAGUERREETERNELLE, EPUB_OPF_EPEEETMORT, EPUB_OPF_NOT_FORMATTED]);
 
+it('can parse epub opf meta items', function () {
+    $opf = OpfItem::make(file_get_contents(EPUB_OPF_EPUB2), EPUB_OPF_EPUB2);
+
+    $meta = $opf->getMetaItems();
+
+    // calibre:title_sort
+    // calibre:series
+    // calibre:series_index
+    // calibre:timestamp
+    // calibre:rating
+    // cover
+    // calibre:author_link_map
+
+    $title_sort = $opf->getMetaItem('calibre:title_sort');
+    $series = $opf->getMetaItem('calibre:series');
+    $series_index = $opf->getMetaItem('calibre:series_index');
+    $timestamp = $opf->getMetaItem('calibre:timestamp');
+    $rating = $opf->getMetaItem('calibre:rating');
+    $cover = $opf->getMetaItem('cover');
+    $author_link_map = $opf->getMetaItem('calibre:author_link_map');
+    $not_exist = $opf->getMetaItem('not_exist');
+
+    expect($meta)->toBeArray();
+    expect(get_class($title_sort))->toBe(BookMeta::class);
+    expect(get_class($series))->toBe(BookMeta::class);
+    expect(get_class($series_index))->toBe(BookMeta::class);
+    expect(get_class($timestamp))->toBe(BookMeta::class);
+    expect(get_class($rating))->toBe(BookMeta::class);
+    expect(get_class($cover))->toBe(BookMeta::class);
+    expect(get_class($author_link_map))->toBe(BookMeta::class);
+    expect($not_exist)->toBeNull();
+
+    expect($title_sort->getContents())->toBeString();
+    expect($series->getContents())->toBeString();
+    expect($series_index->getContents())->toBeString();
+    expect($timestamp->getContents())->toBeString();
+    expect($rating->getContents())->toBeString();
+    expect($cover->getContents())->toBeString();
+    expect($author_link_map->getContents())->toBeString();
+
+    expect($series->getContents())->toBe('Les Enfants de la Terre');
+    expect($series_index->getContents())->toBe('1.0');
+    expect($timestamp->getContents())->toBe('2023-03-25T10:32:21+00:00');
+});
+
 it('can parse epub opf alt', function () {
     $opf = OpfItem::make(file_get_contents(EPUB_OPF_EPUB3_ALT), EPUB_OPF_EPUB3_ALT);
 
@@ -60,7 +106,7 @@
     expect($opf->getDcDate())->toBeNull();
     expect($opf->getDcSubject())->toBeArray();
     expect($opf->getDcLanguage())->toBeString();
-    expect($opf->getMeta())->toBeArray();
+    expect($opf->getMetaItems())->toBeArray();
     expect($opf->getCoverPath())->toBeString();
     expect($opf->getEpubVersion())->toBeGreaterThanOrEqual(2);
 });
@@ -79,7 +125,7 @@
     expect($opf->getDcIdentifiers())->toBeArray();
     expect($opf->getDcSubject())->toBeArray();
     expect($opf->getDcLanguage())->toBeString();
-    expect($opf->getMeta())->toBeArray();
+    expect($opf->getMetaItems())->toBeArray();
     expect($opf->getCoverPath())->toBeString();
     expect($opf->getEpubVersion())->toBeGreaterThanOrEqual(2);
 });