diff --git a/doc/naas/introduction.md b/doc/naas/introduction.md
index 24f2edaa578b2c9496ebc8b007f02956530a2c4a..a478341213daff048a021fe52ca5e37d941ba628 100644
--- a/doc/naas/introduction.md
+++ b/doc/naas/introduction.md
@@ -2,9 +2,10 @@
 
 This section describes some core concepts for Delivering Network as a Service in OpenSlice. There are many articles and reports on the subject like:
 
+
 * TMF909 API Suite Specification for NaaS
-* TMF926A Connectivity_as_a_Service 
-* TMF931-Open_Gateway_Onboarding_and_Ordering_Component_Suite
+* TMF926A Connectivity as a Service 
+* TMF931-Open Gateway Onboarding and Ordering Component Suite
 * GSMA Open Gatewy initiative
 
 In general Network as a Service (NaaS) is a  service model that allows users to consume network infrastructure and services , similar to how they would consume other cloud services like Software as a Service (SaaS) or Infrastructure as a Service (IaaS). NaaS abstracts the complexity of managing physical network infrastructure, providing users with virtualized network resources that can be dynamically allocated and managed through software.
@@ -17,7 +18,9 @@ OpenSlice makes extensive use of TMFORUM's models and APIs. Therefore if one is
 To deliver NaaS we need to incorporate various APIs (see TMF909 API Suite Specification for NaaS). OpenSlice implements various TMF APIs to deliver NaaS and support the  lifecycle functions required to manage the network capabilities exposed as Network as a Service and managed by operational domains.
 
 
+
 ## Probe further
 
+* Check the [TMFORUM - API assets - Onboarding and Ordering Component Suite (TMF931)](https://www.tmforum.org/oda/open-apis/partners/camara)
 * For a complete list of supported APIs, see [Supported APIs](exposed_apis.md)
 * Check the defined user roles of OpenSlice in our [Terminology](../terminology.md)
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