array(4) {
[0]=>
string(54) "Proceedings of the Institution of Mechanical Engineers"
[1]=>
string(86) " Part I- Journal of Systems and Control Engineering-2016-Boubakir-0959651816652023.pdf"
[2]=>
string(8) " 2074283"
[3]=>
string(21) " 2016-10-11 17:59:0
"
}