Astrova, I. , Koschel, A. , Siekmann, B. , Starrach, M. , Tebbe, C. , StefanWolf, S. , Schaaf, M.. "OSGi in Cloud Environments". World Academy of Science, Engineering and Technology, Open Science Index 77, International Journal of Computer and Information Engineering, (2013), 7(5), 575 - 585.