@article{CMUC_1970__11_4_a2,
     author = {Najzar, Karel},
     title = {Stability of the method of least squares for finding the eigenvalues of a symmetric operator},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {641--655},
     publisher = {mathdoc},
     volume = {11},
     number = {4},
     year = {1970},
     mrnumber = {0298439},
     zbl = {0207.13602},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1970__11_4_a2/}
}