Felix Albu, Kiyoshi Nishikawa, "Nonlinear Adaptive Filtering with a Family of Kernel Affine Projection Algorithms (Handbook of Research on Advanced Intelligent Control Engineering and Automation)," IGI Global, 2015
Kiyoshi Nishikawa, Felix Albu, "Consideration on the Performance of Kernel Adaptive Filters for the Mixture of Linear and Non-Linear Environments," APSIPA ASC 2014, Dec.9-Dec.12, 2014
Felix Albu, Kiyoshi Nishikawa, "A fixed budget implementation of a new variable step size kernel proportionate NLMS algorithm," ICCAS 2014, Oct 22-25, 2014