On the positive solutions of a higher order functional differential equation with a discontinuity.
Graef, John R. ; Spikes, Paul W. ; Grammatikopoulos, Myron K.
International Journal of Mathematics and Mathematical Sciences, Tome 5 (1982), p. 263-273 / Harvested from The Electronic Library of Mathematics
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Publié le : 1982-01-01
DOI : https://doi.org/10.1155/S0161171282000234
EUDML-ID : urn:eudml:doc:45011 
@article{03783502,
     title = {On the positive solutions of a higher order functional differential equation with a discontinuity.},
     journal = {International Journal of Mathematics and Mathematical Sciences},
     volume = {5},
     year = {1982},
     pages = {263-273},
     doi = {10.1155/S0161171282000234},
     zbl = {0497.34058},
     language = {en},
     url = {http://dml.mathdoc.fr/item/03783502}
}

Graef, John R.; Spikes, Paul W.; Grammatikopoulos, Myron K. On the positive solutions of a higher order functional differential equation with a discontinuity.. International Journal of Mathematics and Mathematical Sciences, Tome 5 (1982) pp. 263-273. doi : 10.1155/S0161171282000234. http://gdmltest.u-ga.fr/item/03783502/