TY  - JOUR 
T1  - Comparative pharmacognosy of <i>Pyrrosia petiolosa</i> and   <i>Pyrrosia davidii</i> 
JO  - Revista Brasileira de Farmacognosia
A1  - Cheng, Dandan
A1  - Zhang, Yingying
A1  - Xin, Xiaowei
A1  - Gao, Demin
SN  - 0102-695X
UL  - 10.1016/j.bjp.2014.07.017
VL  - 24 
Y1  - 2014
PB  - Brazil 
ER  -