TY - JOUR AU - A. Raptis TI - Unsteady mass transfer and free convection through a porous medium JO - Theoretical and applied mechanics PY - 1983 SP - 105 VL - 9 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TAM_1983_9_1_a10/ LA - en ID - TAM_1983_9_1_a10 ER -