diff --git a/nfc-paper.bib b/nfc-paper.bib
index ed845a5..2e739c2 100644
--- a/nfc-paper.bib
+++ b/nfc-paper.bib
@@ -39,3 +39,12 @@ keywords={computer network security;cryptography;near-field communication;wirele
 doi={10.1109/WiMOB.2012.6379169}, 
 ISSN={2160-4886}, 
 month={Oct},}
+@INPROCEEDINGS{7049317, 
+author={Haase, J. and Zucker, G. and Alahmad, M.}, 
+booktitle={Industrial Electronics Society, IECON 2014 - 40th Annual Conference of the IEEE}, 
+title={Energy efficient building automation: A survey paper on approaches and technologies for optimized building operation}, 
+year={2014}, 
+pages={5350-5356}, 
+keywords={building management systems;renewable energy sources;IT;building operation optimization;cross-domain knowledge;energy efficient building automation;energy performance;legislative constraints;management organization;operation data monitoring;renewable energy sources;trusted technology;Automation;Buildings;Energy consumption;Energy management;Monitoring;Real-time systems;Wireless sensor networks;building automation;data analysis;electrical consumption;monitoring;wireless sensor networks}, 
+doi={10.1109/IECON.2014.7049317}, 
+month={Oct},}