@article{MZM_2009_85_3_a14,
     author = {X.-Q. Liu and J.-Y. Rong},
     title = {On {Hermitian} {Nonnegative-Definite} {Solutions} to {Matrix} {Equations}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {470--475},
     publisher = {mathdoc},
     volume = {85},
     number = {3},
     year = {2009},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2009_85_3_a14/}
}