@article{CMUC_1994__35_4_a20,
     author = {Rohn, Ji\v{r}{\'\i}},
     title = {Checking positive definiteness or stability of symmetric interval matrices is {NP-hard}},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {795--797},
     publisher = {mathdoc},
     volume = {35},
     number = {4},
     year = {1994},
     mrnumber = {1321250},
     zbl = {0818.65032},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1994__35_4_a20/}
}