diff --git a/pages/epam.txt b/pages/epam.txt
index 64feade9f..aff2d05b6 100644
--- a/pages/epam.txt
+++ b/pages/epam.txt
@@ -23,6 +23,8 @@ ALITA
     https://wearecommunity.io/events/ai-games-masterclass/talks/75668
 COPILOT
     https://wearecommunity.io/events/ai-games-masterclass/talks/75667
+    https://learn.microsoft.com/en-us/training/modules/introduction-to-github-copilot/
+    https://learn.epam.com/detailsPage?id=35b2a352-e26e-4590-9a48-80f7716ccc5e
 AIGENT
     https://wearecommunity.io/events/ai-games-masterclass/talks/75883
 
diff --git a/science/ds/docs/books.txt b/science/ds/docs/books.txt
index c85161a7e..44911cf94 100644
--- a/science/ds/docs/books.txt
+++ b/science/ds/docs/books.txt
@@ -18,7 +18,7 @@ Petrov - Database Internals
     B4C0E9966DCAF74A08B5498DC632E5D5
     902BA0835E8E3E0262C236E3198E1EF5
     05EF18AA9887E93CD3BABF136E65001B
-    !!!
+    !!! ru ed also available
 2008
 Brass - Advanced Data Structures
     9ADB50FA694FE82036A7F38D9BEDFC98