TY  - JOUR 
T1  - Percutaneous nephrolithotomy for proximal ureteral calculi with severe hydronephrosis: assessment of different lithotriptors
JO  - International braz j urol
A1  - Monga, Manoj
SN  - 1677-5538
UL  - 10.1590/S1677-55382010000200014
VL  - 36 
Y1  - 2010
PB  - Brasil 
ER  -