array(6) { [0]=> string(12) "Todd K. Moon" [1]=> string(87) " Wynn C. Stirling - Mathematical Methods and Algorithms for Signal Processing (Pap -Cdr" [2]=> string(13) "Prentice Hall" [3]=> string(9) "1999).pdf" [4]=> string(9) " 40870325" [5]=> string(21) " 2008-09-09 10:45:0 " }