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Journal of Mathematical Analysis and Applications > 2008 > 338 > 2 > 852-872
Discussiones Mathematicae, Differential Inclusions, Control and Optimization > 2006 > 26 > 1 > 143-158
Journal of Mathematical Analysis and Applications > 2008 > 338 > 2 > 852-872
Discussiones Mathematicae, Differential Inclusions, Control and Optimization > 2006 > 26 > 1 > 143-158