Apparent close approaches between near-Earth asteroids and quasars - Precise astrometry and frame linkingD. A. Nedelcu, M. Birlan, J. Souchay, M. Assafin, A. H. Andrei, O. Bădescu, P. Popescu and P. ParaschivA&A, 509 (2010) A27DOI: https://doi.org/10.1051/0004-6361/200913172
