Update CONTRIBUTING.md

CONTRIBUTING.md

@@ -14,6 +14,18 @@
 
 - [Dr. Ferda Özdemir Sönmez](https://www.linkedin.com/in/f-ferda-%C3%B6zdemir-s%C3%B6nmez-pmp-msc-phd-92809719/) 
 
+-
+-Other Supporters and Contributors
+-Rebeca A. Corrales Vargas
+Programa de Master en Ciberseguridad (Program for Master in Cybersecurity)
+Universidad Cenfotec, San José, Costa Rica
+
+-Paulo C. Sequeira Gutiérrez
+Programa de Master en Ciberseguridad (Program for Master in Cybersecurity)
+Universidad Cenfotec, San José, Costa Rica
+
+-For user experiences and case studies please check [CASE-STUDIES-AND-EXPERIENCES.md](./CASE-STUDIES-AND-EXPERIENCES.md) 
+
 - Ready to Contribute?
 The OWASP Security Qualitative Metrics is desired to get community-driven effort and we welcome contributions and feedback.
 If you would like to contribute to this project, by for example using the metrics and providing feedbacks and case-study reports or simply by offering new relevant metrics please reach out to the project leader either via email or via the officia [Gitter Chatroom](https://gitter.im/owasp-www-project-security-qualitative-metrics/community).