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Mediterranean Journal of Mathematics > 2019 > 16 > 2 > 1-10
Journal of Fixed Point Theory and Applications > 2019 > 21 > 1 > 1-17
Applied Mathematics and Computation > 2013 > 219 > 12 > 6743-6749
Nonlinear Analysis > 2010 > 73 > 1 > 155-162