Some examples for nonlinear superposition.
Kocic, V.Lj.
Publications de l'Institut Mathématique [Elektronische Ressource], Tome 35 (1977), p. 139-144 / Harvested from Göttinger Digitalisierungszentrum
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Publié le : 1977-01-01
EUDML-ID : urn:eudml:doc:181359 
@article{GDZPPN002536935,
     title = {Some examples for nonlinear superposition.},
     journal = {Publications de l'Institut Math\'ematique [Elektronische Ressource]},
     volume = {35},
     year = {1977},
     pages = {139-144},
     zbl = {0372.35010},
     url = {http://dml.mathdoc.fr/item/GDZPPN002536935}
}

Kocic, V.Lj. Some examples for nonlinear superposition.. Publications de l'Institut Mathématique [Elektronische Ressource], Tome 35 (1977) pp. 139-144. http://gdmltest.u-ga.fr/item/GDZPPN002536935/