@article{UZERU_1986_3_a9,
     author = {H. A. Asatryan and Yu. A. Kravtsov},
     title = {On the possibility of formation of simple caustics by deformation of the ellipsoidal mirror},
     journal = {Proceedings of the Yerevan State University. Physical and mathematical sciences},
     pages = {65--68},
     publisher = {mathdoc},
     number = {3},
     year = {1986},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/UZERU_1986_3_a9/}
}