SIMBAD references

We are carrying out a program on the identifications and follow-up observations of the x-ray sources selected from the ROSAT All-Sky Survey Bright Source Catalogue with the 2.16m telecope and 60cm telescope at Beijing Astronomical Observatory. After the first run observation, six bright low-redshift quasars have been discovered. They are 1RXS J002811.6+310342 (V=15.42, z=0.500), 1RXS J012556.6+351039 (V=16.42, z=0.312), 1RXS J080132.3+473618 (V=15.73, z=0.1583), 1RXS J221537.8+290239 (V=16.50, z=0.2288), 1RXS J231456.0+224325 (V=16.30, z=0.1692) and 1RXS J234734.6+271910 (V=16.06, z=0.646).