@article {10.3844/jmssp.2018.56.63, article_type = {journal}, title = {Coupled Pettis-Hadamard Fractional Differential Systems with Retarded and Advanced Arguments}, author = {Abbas, Saïd and Benchohra, Mouffak and Sivasundaram, Seenith}, volume = {14}, year = {2018}, month = {Feb}, pages = {56-63}, doi = {10.3844/jmssp.2018.56.63}, url = {https://thescipub.com/abstract/jmssp.2018.56.63}, abstract = {In this study, we present some results concerning the existence of weak solutions for some coupled systems of Hadamard fractional differential equations involving the both retarded and advanced arguments. Our results are obtained by using fixed point theory and the technique of measure of weak noncompactness.}, journal = {Journal of Mathematics and Statistics}, publisher = {Science Publications} }