@article{KYB_1993_29_6_a3,
     author = {Helmke, Uwe and Prechtel, Michael and Shayman, Mark A.},
     title = {Riccati-like flows and matrix approximations},
     journal = {Kybernetika},
     pages = {563--582},
     year = {1993},
     volume = {29},
     number = {6},
     mrnumber = {1264887},
     zbl = {0802.65058},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KYB_1993_29_6_a3/}
}