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Eindeutigkeitssätze für gewòhnliche, parabolische, und hyperbolische Differentialgleichungen. Math. Zeitschrift 74 (3) (1960), pp. 191 - 209.
MR 0117427
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MR 0136880
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MR 0161014 |
Zbl 0132.07301
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On the convergence of successive approximations in the Darboux problem. Ann. Polon. Math. 17 (1966), pp. 329-336.
MR 0188579 |
Zbl 0144.13704
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On thе convеrgеncе of succеssivе approximàtions in thе thеory of ordinary diffеrеntial еquations II. Indag. Math. 20 (1958), pp. 540-546.
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