Nonlinear Analysis > 2013 > 93 > Complete > 155-161
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journal ISSN : | 0362-546X |
DOI | 10.1016/j.na.2013.07.025 |
Nonlinear Analysis > 2013 > 93 > Complete > 155-161
journal ISSN : | 0362-546X |
DOI | 10.1016/j.na.2013.07.025 |