@article{AUCMP_1978_19_2_a11,
     author = {Luong Dinh Tin},
     title = {The comparison of spectrum of normalizable matrices},
     journal = {Acta Universitatis Carolinae. Mathematica et Physica},
     pages = {69--74},
     year = {1978},
     volume = {19},
     number = {2},
     mrnumber = {0509351},
     zbl = {0387.47004},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AUCMP_1978_19_2_a11/}
}