Simplified Computation of l2-Sensitivity for 1-D and a Class of 2-D State-Space Digital Filters Considering 0 and +-1 Elements Topics: Design and Implementation of Signal Processing Systems; Multidimensional Signal Processing In Proceedings of the 10th International Conference on Signal Processing and Multimedia Applications and 10th International Conference on Wireless Information Networks and Systems - Volume 0ICETE, 53-58, 2013 , Reykjavík, Iceland