diff --git a/2024-01-31_OpenTelemetry_Looks_Good_To_Me/demo/client/src/main/resources/application.yml b/2024-01-31_OpenTelemetry_Looks_Good_To_Me/demo/client/src/main/resources/application.yml
index 6747cc1e..e4a4284c 100644
--- a/2024-01-31_OpenTelemetry_Looks_Good_To_Me/demo/client/src/main/resources/application.yml
+++ b/2024-01-31_OpenTelemetry_Looks_Good_To_Me/demo/client/src/main/resources/application.yml
@@ -7,6 +7,7 @@ server:
       enabled: true
 
 management:
+  # https://docs.micrometer.io/micrometer/reference/implementations/otlp.html
   otlp:      
     metrics:
       export:
@@ -25,6 +26,8 @@ management:
         name: '${service.name}'
         namespace: '${service.namespace}'
         version: '@project.version@'
+    # https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/metrics/sdk.md#explicit-bucket-histogram-aggregation
+    # https://docs.micrometer.io/micrometer/reference/implementations/otlp.html
     distribution:
       percentiles:
         all: 0.5, 0.95, 0.99