1. Processing noisy line spectrograms as digital pictures;Nichol;Pattern Recognition,1977
2. Random data: analysis and measurement procedures;Bendat,1971
3. Symposium on autocorrelation in time series;Daniell,1946
4. Special measurements of sliding tones;Gersch;IRE Convention Record,1960
5. Picture Extraction — Automatic Interpretation and Classification of Images;Rosenfeld,1969