%0 Journal Article %A Anderson, W. G. %A McLenaghan, R. G. %A Sasse, F. D. %T Huygens' principle for the non-self-adjoint scalar wave equation on Petrov type III space-times %J Annales de l'I.H.P. Physique théorique %D 1999 %P 259-276 %V 70 %N 3 %I Gauthier-Villars %U http://www.numdam.org/item/AIHPA_1999__70_3_259_0/ %G en %F AIHPA_1999__70_3_259_0