Polarization degrees of freedom in near-threshold photoproduction of -mesons in the decay channelA. V. Sarantsev, A. V. Anisovich, V. A. Nikonov and H. SchmiedenEur. Phys. J. A, 39 1 (2009) 61-70DOI: https://doi.org/10.1140/epja/i2008-10696-0