Amplitude reconstruction from complete experiments and truncated   partial-wave expansions
  We compare the methods of amplitude reconstruction, for a complete experiment and a truncated partial wave analysis, applied to the photoproduction of pseudo-scalar mesons. The approach is pedagogical, showing in detail how the amplitude reconstruction (observables measured at a single energy and angle) is related to a truncated partial-wave analysis (observables measured at a single energy and a number of angles). 
R.L. Workman, L. Tiator, Y. Wunderlich, M. Doering, H. Haberzettl
nucl-th nucl-ex