diff --git a/201 Metadata/My Library.bib b/201 Metadata/My Library.bib
index 146848f72..4aba593bf 100644
--- a/201 Metadata/My Library.bib	
+++ b/201 Metadata/My Library.bib	
@@ -7870,7 +7870,8 @@ for defect classification of TFT–LCD panels.pdf}
 @online{ME2046_The_z_transform_Chapter_3pdf2254MEa,
   title = {{{ME2046}}\_{{The}}\_z\_transform\_{{Chapter}}\_3.Pdf: 2254 {{ME}} 2046 {{SEC1000 DIGITAL CONTROL SYSTEMS}}},
   url = {https://canvas.pitt.edu/courses/301794/files/19363970?module_item_id=5477528},
-  urldate = {2025-01-16}
+  urldate = {2025-01-16},
+  file = {/home/danesabo/Zotero/storage/64RKS2MZ/ME2046_The_z_transform_Chapter_3.pdf 2254 ME 2046 SEC1000 DIGITAL CONTROL SYSTEMS.pdf;/home/danesabo/Zotero/storage/3ZCR7KAV/19363970.html}
 }
 
 @online{ME2046_The_z_transform_Chapter_3pdf2254MEb,