diff --git a/README.md b/README.md
index 0ed8ca6..9de1ab2 100644
--- a/README.md
+++ b/README.md
@@ -13,3 +13,7 @@ git clone https://git.media-techport.de/scriptos/prtg-linux-service-monitor.git
 # Folgenden Sensor in PRTG anlegen:
 
 HTTP Push Data Advanced sensor
+
+Quellen:
+https://kb.paessler.com/en/topic/70771-how-can-i-monitor-and-automatically-restart-a-service-on-a-linux-host
+https://www.paessler.com/manuals/prtg/http_push_data_advanced_sensor