María A. Nieto-Santisteban William O'Mullane Jim Gray Nolan Li Tamas Budavari Alexander S. Szalay Aniruddha R. Thakar Extending the SDSS Batch Query System to the National Virtual Observatory Grid http://arxiv.org/abs/cs.DB/0403017 2004 CoRR cs.DB/0403017 db/journals/corr/corr0403.html#cs-DB-0403017 informal publication