An investigation of the luminosity-metallicity relation for a large sample of low-metallicity emission-line galaxiesN. G. Guseva, P. Papaderos, H. T. Meyer, Y. I. Izotov and K. J. FrickeA&A, 505 1 (2009) 63-72DOI: https://doi.org/10.1051/0004-6361/200912414