A 14-bit 80-kHz sigma-delta A/D converter: modeling, design and performance evaluation. - Steven R. Norsworthy; Irving G. Post; H. Scott Fetterman (IEEE J. Solid State Circuits, 1989)

Optimal Nonrecursive Noise Shaping Filters for Oversampling Data Converters Part 1: Theory. - Steven R. Norsworthy (ISCAS, 1993)

Optimal Nonrecursive Noise Shaping Filters for Oversampling Data Converters Part 2: Applications. - Steven R. Norsworthy (ISCAS, 1993)