H. Yang, M. Siebert, P. Lühne, H. Sack, и C. Meinel. 7th Int. Conf. on Signal Image Technology and Internet Based Systems (SITIS 2011), Track Internet Based Computing and Systems, (2011)
M. Quasthoff, H. Sack, и C. Meinel. Proc. of 3rd International Conference on Internet and Web Applications and Services (ICIW 08), 0, стр. 576-582. Los Alamitos, CA, USA, IEEE Computer Society, (2008)