T. X. Thuan Main Astronomical Observatory

MMT Observations of New Extremely Metal-poor Emission-Line Galaxies in the Sloan Digital Sky Survey

USA, Kyiv, Ukraine, 2007, 0704.3842.

The chemical composition of metal-poor emission-line galaxies in the Data Release 3 of the Sloan Digital Sky Survey

USA, France, Kyiv, 2006 .