@misc{A._R._Mkrtchyan_Application,
 author={A. R. Mkrtchyan and Kh. V. Kotanjyan},
 address={Երևան},
 howpublished={online},
 publisher={Հայաստանի ԳԱԱ},
 type={Հոդված},
 title={Application of Ambartsumian Principle of Invariance to Problems of Radiation Transfer in Solids},
 keywords={Physics, Science},
}