1. A. Bazzano, L. Boccaccini, C. La Padula, R.K. Manchanda, M. Mastropietro, R. Patriarca, V.F. Polcaro, and P. Ubertini, to be published in Nucl. Instr. and Meth.
2. Elementary numerical analysis;Conte,1965
3. Proc. 23rd COSPAR Meeting;Feninmore,1982
4. Introduction to numerical analysis;Hildebrand,1956
5. Hercules X-1 hard X-ray pulsations observed from HEAO 1