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We present a catalog of 307 optical counterparts of the bright ROSAT X-raysources, identified with the ASAS North survey data and showing periodicbrightness variations. They all have declination north of -25 deg. Other dataavailable from the literature for the listed stars are also included. All thetabulated stars are new variables, except for 13 previously known, for whichthe revised values of periods are given.

ASAS Photometry of ROSAT Sources. II.New Variables from the ASAS North Survey