@article{RM_2006_61_4_a10,
     author = {S. Yu. Nemirovski and R. G. Shafikov},
     title = {Conjectures of {Cheng} and {Ramadanov}},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {780--782},
     publisher = {mathdoc},
     volume = {61},
     number = {4},
     year = {2006},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_2006_61_4_a10/}
}