TY  - JOUR 
T1  - Free Vibration Analysis of Multiple Cracked Functionally Graded Timoshenko Beams
JO  - Latin American Journal of Solids and Structures
A1  - Lien, Tran Van
A1  - Duc, Ngo Trong
A1  - Khiem, Nguyen Tien
SN  - 1679-7825
UL  - 10.1590/1679-78253693
VL  - 14 
Y1  - 2017
PB  - Brasil 
ER  -