TY - JOUR AU - McLenaghan, R. G. AU - Walton, T. F. TI - An explicit determination of the non-self-adjoint wave equations on curved space-time that satisfy Huygens' principle. Part I : Petrov type N background space-times JO - Annales de l'I.H.P. Physique théorique PY - 1988 SP - 267 EP - 280 VL - 48 IS - 3 PB - Gauthier-Villars UR - http://www.numdam.org/item/AIHPA_1988__48_3_267_0/ LA - en ID - AIHPA_1988__48_3_267_0 ER -