Hartmut Brandenstein, Rolf Unbehauen. Approximation of complex-valued 2-D frequency response specifications by separable-denominator digital filters. In 1997 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP '97, Munich, Germany, April 21-24, 1997. pages 2161-2164, IEEE Computer Society, 1997. [doi]
Abstract is missing.