@article{NUMA_1978__31_132577,
     author = {E.K. Blum and P.B. Geltner},
     title = {Numerical {Solution} of {Eigentuple-Eigen} vector {Problems} in {Hilbert} {Spaces} by a {Gradient} {Method.}},
     journal = {Numerische Mathematik},
     pages = {231--246},
     publisher = {mathdoc},
     volume = {31},
     year = {1978},
     zbl = {0421.65025},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1978__31_132577/}
}