@article{NUMA_1986__48_133064,
     author = {G. Raugel},
     title = {Finite {Dimensional} {Approximation} of {Bifurcation} {Problems} in {Presence} of {Symmetries.}},
     journal = {Numerische Mathematik},
     pages = {137--198},
     publisher = {mathdoc},
     volume = {48},
     year = {1986},
     zbl = {0562.65073},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1986__48_133064/}
}