The photospheric abundances of active binaries - I. Detailed analysis of HD 113816 (IS Vir) and HD 119285 (V851 Cen)D. Katz, F. Favata, S. Aigrain and G. MicelaA&A, 397 2 (2003) 747-756DOI: https://doi.org/10.1051/0004-6361:20021536