@article{TM_2011_273_a9,
     author = {Yuri S. Ledyaev},
     title = {On analytical solutions of matrix {Riccati} equations},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {231--246},
     publisher = {mathdoc},
     volume = {273},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TM_2011_273_a9/}
}