The S2 baseband processing system for phase-coherent pulsar applicationsR. Wietfeldt, W. Van Straten, D. Del Rizzo, N. Bartel, W. Cannon and A. NovikovAstron. Astrophys. Suppl. Ser., 131 3 (1998) 549-554DOI: https://doi.org/10.1051/aas:1998286