HH 223: a parsec-scale H2 outflow in the star-forming region L723R. López, J. A. Acosta-Pulido, G. Gómez, R. Estalella and C. Carrasco-GonzálezA&A, 523 (2010) A16DOI: https://doi.org/10.1051/0004-6361/201015125