1. 7423-UHS ADC: user guide, SILENA Cemusco s/n, Italy.
2. A stretcher and holder module
3. P. Guazzoni, G.F. Taiocchi and L. Zetta. A Fast FIFO memory, with special driver box for mixer units, to be used in multiparametric systems, Report INFN/BE, to be published.
4. DAG, a digital-to-analog generator of coincident pulse pairs