feat: pdf gen

dexes/literature.bib

@@ -319,6 +319,14 @@
   note         = {Zugriff: März 2023}
 }
 
+@misc{bib:mpdf-ref,
+  author       = {{Mpdf Contributors}},
+  howpublished = "\url{https://mpdf.github.io/reference/mpdf-functions/overview.html}",
+  title        = {{Overview mPDF Functions by Category}},
+  year         = {2023},
+  note         = {Zugriff: März 2023}
+}
+
 @misc{bib:qrbot,
   author       = {{TeaCapps}},
   howpublished = "\url{https://qrbot.net}",
@@ -335,6 +343,14 @@
   note         = {Zugriff: März 2023}
 }
 
+@misc{bib:php-array-keys,
+  author       = {{The PHP Group}},
+  howpublished = "\url{https://www.php.net/manual/en/function.array-keys.php}",
+  title        = {{PHP: array-keys - Manual}},
+  year         = {2023},
+  note         = {Zugriff: März 2023}
+}
+
 @misc{bib:typo3-fluid,
   author       = {{TYPO3 Association}},
   howpublished = "\url{https://typo3.org/fluid}",
@@ -438,3 +454,11 @@
   year         = {2023},
   note         = {Zugriff: März 2023}
 }
+
+@misc{bib:typo3-ref-standalone-view,
+  author       = {{TYPO3 Contributors}},
+  howpublished = "\url{https://api.typo3.org/10.4/class_t_y_p_o3_1_1_c_m_s_1_1_fluid_1_1_view_1_1_standalone_view.html}",
+  title        = {{TYPO3\\CMS\\Fluid\\View\\StandaloneView Class Reference}},
+  year         = {2023},
+  note         = {Zugriff: März 2023}
+}