%0 Journal Article %A J.M. Hernando %A E. Reyes %A P.M. Gadea %T Integrability of Tensor Structures of Electromagnetic Type %J Publications de l'Institut Mathématique %D 1985 %P 113 %V _N_S_37 %N 51 %I mathdoc %U http://geodesic.mathdoc.fr/item/PIM_1985_N_S_37_51_a20/ %G en %F PIM_1985_N_S_37_51_a20