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Marano, S., Staicu, V. On the Set of Solutions to a Class of Nonconvex Nonclosed Differential Inclusions. Acta Mathematica Hungarica 76, 287–301 (1997). https://doi.org/10.1023/A:1006533606338
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DOI: https://doi.org/10.1023/A:1006533606338