array(6) { [0]=> string(10) "Dudley D G" [1]=> string(52) " Mathematical Foundations for Electromagnetic Theory" [2]=> string(11) " IEEE Press" [3]=> string(9) " 1994.pdf" [4]=> string(9) " 17217645" [5]=> string(21) " 2007-05-12 00:00:0 " }