@article{xia2015secure,
	  title={Secure outsourcing of virtual appliance},
	    author={Xia, Yubin and Liu, Yutao and Guan, Haibing and Chen, Yunji and Chen, Tianshi and Zang, Binyu and Chen, Haibo},
		  journal={IEEE Transactions on Cloud Computing},
		    year={2015},
			  publisher={IEEE}
}