1. Harwell Pulse Amplitude Selector Type 2252 (Publ. Section, U.K.A.E.A., A.E.R.E., Harwell, Berks., England).
2. H.A. Cole, A general purpose pulse amplitude selector with 100 nsec resolution, U.K.A.E.A., A.E.R.E. Harwell Report R5951, to be published.
3. Nuclear pulse spectrometry;Chase,1961
4. Window discriminator with integrated circuits
5. A portable gamma-spectrometer for field use;Lövborg,1967