Author: Karim, Rahmi Ibrahim Ibrahim Abdel

Karim, Rahmi Ibrahim Ibrahim Abdel: Note on the periodic solutions of systems of ordinary differential equations. (English). Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica-Physica-Chemica, vol. 12 (1972), issue 1, pp. 7-14
Karim, Rahmi Ibrahim Ibrahim Abdel: On the exceptional case in systems of non-linear differential equations. (English). Archivum Mathematicum, vol. 7 (1971), issue 1, pp. 9-20,21a,21
Karim, Rahmi Ibrahim Ibrahim Abdel: On the behaviour of the solutions and their first $(n-1)$ derivatives of the $n$-th order differential equations with periodic coefficients. (English). Archivum Mathematicum, vol. 6 (1970), issue 4, pp. 237-249
Karim, Rahmi Ibrahim Ibrahim Abdel: Studium des Resonanzfalles bei gewöhnlichen linearen reduzierten Differentialgleichungen mit periodischen Koeffizienten. (German) [Study of a resonance case for ordinary linear reduced differential equations with periodic coeficients]. Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica-Physica-Chemica, vol. 9 (1968), issue 1, pp. 27-49
Karim, Rahmi Ibrahim Ibrahim Abdel: Über den Resonanzfall bei gewöhnlichen linearen Differentialgleichungen $n$-ter Ordnung mit periodischen veränderlichen Koeffizienten. (German) [On the resonance case for ordinary linear differential equations of $n$-th order with periodic coefficients]. Archivum Mathematicum, vol. 3 (1967), issue 1, pp. 11-30

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