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Hakutulokset: Kirjoja kirjailijalta Zoltan Muzsnay
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yksi hakutulos.
Variational Principles For Second-order Differential Equations, Application Of The Spencer Theory Of
e-kirja,
2000,
englanti,
ISBN 9789814495363
The inverse problem of the calculus of variations was first studied by Helmholtz in 1887 and it is entirely solved for the differential operators, but only a few results are known …