diff --git a/building_automation.bib b/building_automation.bib
index 36ca571..3a9d6c6 100644
--- a/building_automation.bib
+++ b/building_automation.bib
@@ -50,3 +50,12 @@ pages={1-6},
 keywords={data privacy;home automation;security of data;attack vector solution based analysis;central Europe;digital STROM installation;home-automation solution;privacy constraints;secure smart home systems;Decision support systems;Home appliances;Privacy;Security;Servers;Smart homes;Smart phones},
 doi={10.1109/SSIC.2015.7245682},
 month={Aug},}
+
+@article{bas:sec5,
+  title={A risk assessment framework and software toolkit for cloud service ecosystems},
+  author={Djemame, Karim and Armstrong, Django and Kiran, Mariam and Jiang, Ming},
+  journal={Cloud Computing},
+  pages={119--126},
+  year={2011},
+  publisher={Citeseer}
+}