TY  - JOUR 
T1  - Boundary layer thickness of cylinders and plane surfaces immersed in packed beds in alignment with the flow
JO  - Brazilian Journal of Chemical Engineering
A1  - Delgado, J. M. P. Q.
SN  - 0104-6632
UL  - 10.1590/S0104-66322009000100005
VL  - 26 
Y1  - 2009
PB  - Brasil 
ER  -