TY - JOUR T1 - Vibrational analysis of coconut fiber-PP composites JO - Materials Research A1 - Gelfuso, Maria Virginia A1 - Thomazini, Daniel A1 - Souza, Júlio César Silva de A1 - Lima Junior, José Juliano de SN - 1516-1439 UL - 10.1590/S1516-14392013005000200 VL - 17 Y1 - 2014 PB - Brasil ER -