diff --git a/BPM/notation/BPMN/connections.md b/BPM/notation/BPMN/connections.md
index e8410e5c..e3292bcc 100644
--- a/BPM/notation/BPMN/connections.md
+++ b/BPM/notation/BPMN/connections.md
@@ -1,7 +1,7 @@
 ### BPMN connections
 - https://www.businessstudio.ru/help/docs/current/doku.php/ru/csdesign/bpmodeling/bpmn_notation
   - [Типы связей между элементами диаграммы BPMN](https://www.businessstudio.ru/help/docs/current/doku.php/ru/csdesign/bpmodeling/bpmn_notation#%D1%82%D0%B8%D0%BF%D1%8B_%D1%81%D0%B2%D1%8F%D0%B7%D0%B5%D0%B9_%D0%BC%D0%B5%D0%B6%D0%B4%D1%83_%D1%8D%D0%BB%D0%B5%D0%BC%D0%B5%D0%BD%D1%82%D0%B0%D0%BC%D0%B8_%D0%B4%D0%B8%D0%B0%D0%B3%D1%80%D0%B0%D0%BC%D0%BC%D1%8B_bpmn)
-
+- https://mainthing.ru/ru/item/434/
 - https://stormbpmn.com/bpmn/elements
 
 ### info