@article{MM2_1974__13_154266,
     author = {Hans-Peter Helfrich},
     title = {Fehlerabsch\"atzungen f\"ur das {Galerkinverfahren} zur {L\"osung} von {Evolutionsgleichungen.}},
     journal = {Manuscripta mathematica},
     pages = {219--236},
     publisher = {mathdoc},
     volume = {13},
     year = {1974},
     zbl = {0323.65037},
     url = {http://geodesic.mathdoc.fr/item/MM2_1974__13_154266/}
}