@article{10_21136_AM_1971_103347,
     author = {Mi\v{s}o\v{n}, Karel},
     title = {Explicit expressions for the coordinates of foci and vertices of a quadric in dependence on the coefficients of its {Cartesian} equations},
     journal = {Applications of Mathematics},
     pages = {215--219},
     publisher = {mathdoc},
     volume = {16},
     number = {3},
     year = {1971},
     doi = {10.21136/AM.1971.103347},
     mrnumber = {0287406},
     zbl = {0218.65003},
     language = {en},
     url = {https://geodesic-test.mathdoc.fr/articles/10.21136/AM.1971.103347/}
}