Off-diagonal helicity density matrix elements for vector mesons produced in polarized e+e- processes M. Anselmino, M. Bertini, F. Caruso, F. Murgia and P. QuintairosEur. Phys. J. C, 11 3 (1999) 529-537DOI: https://doi.org/epjc/v11/p529(epjc0200)