%0 Journal Article %A Agwa, M. A. %A Pinto da Costa, A. %T Using symbolic computation in the characterization of frictional instabilities involving orthotropic materials %J International Journal of Applied Mathematics and Computer Science %D 2015 %P 259-267 %V 25 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/IJAMCS_2015_25_2_a5/ %G en %F IJAMCS_2015_25_2_a5