@article{articleade65218,
title   = {Investigation of USNO-A2.0 catalog positions},
author = {Assafin, M and Andrei, A H and Martins, R Vieira and Silva Neto, D N and Camargo, J I B and Teixeira, R and Benevides-Soares, Paulo},
year = {2001},
journal   = {The Astrophysical Journal}
}