Least squared error FIR filter design with spline transition functions. - C. Sidney Burrus; Admadji W. Soewito; Ramesh A. Gopinath (ICASSP, 1990)

Least squared error FIR filter design with transition bands. - C. Sidney Burrus; Admadji W. Soewito; Ramesh A. Gopinath (IEEE Trans. Signal Process., 1992)