@article{NUMA_1986__48_133072,
     author = {H. Werner and H. Hilgers},
     title = {L\"osung von {Differentialgleichungen} mit {Splinefunktionen.} {Eine} {St\"orungstheorie.} {Tei} 1: {Divergenzaussagen.}},
     journal = {Numerische Mathematik},
     pages = {323--336},
     publisher = {mathdoc},
     volume = {48},
     year = {1986},
     zbl = {0591.65053},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1986__48_133072/}
}