@article{CMUC_1970__11_3_a5,
     author = {Najzar, Karel},
     title = {Error-estimates for the method of least squares of finding eigenvalues and eigenfunctions},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {463--479},
     publisher = {mathdoc},
     volume = {11},
     number = {3},
     year = {1970},
     mrnumber = {0276808},
     zbl = {0211.16501},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1970__11_3_a5/}
}