T. F. Kniazeva

The Hamburg/SAO survey for emission-line galaxies. VI. The sixth list of 126 galaxies

U. Hopp, H. Hagen, V. Lipovetsky, 2001, astro-ph/0507082.

Spectroscopy of candidate metal-deficient galaxies with the 6-m telescope

A. Kniazev, S. Pustilnik, A. Ugryumov, 2000 .

Low Surface Brightness Galaxies in the Sloan Digital Sky Survey. I. Search Method and Test Sample

E. Grebel, F. Prada, A. Kniazev, 2003, astro-ph/0310644.