1. Signal averagers;Anon,1976
2. Signal averaging computers;Coor;Industrial Research,1972
3. S/N enhancement through instrumental techniques;Heiftje;Anal Chem,1972
4. Boxcar-integrater with long holding times;Blume;Rev Sci Inst,1961
5. Gated integrator for repetitive signals;Reichert;Rev Sci Inst,1964