Four hard X-ray sources from the INTEGRAL and Swift catalogs have been identified .
X-ray and optical spectra have been obtained for each of the objects being studied by using data from the INTEGRAL , Swift , ROSAT , and Chandra X-ray observatories as well as observations with the RTT-150 and AZT-33IK optical telescopes .
Two sources ( SWIFT J1553.6+2606 and SWIFT J1852.2+8424 ) are shown to be extragalactic in nature : the first is a quasar , while the registered X-ray flux from the second is the total emission from two Seyfert 1 galaxies at redshifts 0.1828 and 0.2249 .
The source IGR J22534+6243 resides in our Galaxy and is an X-ray pulsar with a period of \sim 46.674 s that is a member of a high-mass X-ray binary , probably with a Be star .
The nature of yet another Galactic source , SWIFT J1852.8+3002 , is not completely clear and infrared spectroscopy is needed to establish it .

\englishkeywords X-ray sources , active galactic nuclei , X-ray binaries