@article{Narayana_2007 author = {P. A. Lakshmi Narayana}, title = {Soret and Dufour Effects on Free Convection Heat and Mass Transfer in a Doubly Stratified Darcy Porous Medium}, journal = {Journal of Porous Media}, issn = {1091-028X}, year = {2007}, volume = {10}, number = {6}, pages = {613--624} }