2H.T. Nicholas, Ⅲ H. Samulei. An analysis of the output spectrum of Direct Digital Frequency Sythesizers in the presence of phase-accumulator truncation, IEEE Proc. 41st AFCS, 1987.495~502
3Nicholas H T, Ⅲ H. Samulei, Kim B. The optimization of direct digita frequency synthesizer performance in the presence of finite word length effects, IEEE Proc. 42th AFCS, 1988. 357~363
4Vankka J. Spur reduction techniques in sine output direct digital synthesis, IEEE Proc . 50th AFCS, 1996. 951~959