@misc{E._Y._Khachian_A,
 author={E. Y. Khachian and R. A. Ahmad},
 address={Երևան},
 howpublished={online},
 publisher={ՀՀ ԳԱԱ հրատ.},
 title={A new method for calculating the dominant periods of multilayer of soil},
 type={Հոդված},
 keywords={Science, Geology, Seismology},
}