On the Quadratic Integrability of Solutions of d2x/dt2 + f(t)x = 0.
Halvorsen, Sigbjorn
Mathematica Scandinavica, Tome 14 (1964), p. 111-119 / Harvested from Göttinger Digitalisierungszentrum
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Publié le : 1964-01-01
EUDML-ID : urn:eudml:doc:165873 
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     title = {On the Quadratic Integrability of Solutions of d2x/dt2 + f(t)x = 0.},
     journal = {Mathematica Scandinavica},
     volume = {14},
     year = {1964},
     pages = {111-119},
     url = {http://dml.mathdoc.fr/item/GDZPPN00234761X}
}

Halvorsen, Sigbjorn. On the Quadratic Integrability of Solutions of d2x/dt2 + f(t)x = 0.. Mathematica Scandinavica, Tome 14 (1964) pp. 111-119. http://gdmltest.u-ga.fr/item/GDZPPN00234761X/