TY  - JOUR
AU  - Duff, G. F. D.
TI  - Hyperbolic Differential Equations and Wave Propagation
JO  - Canadian mathematical bulletin
PY  - 1977
SP  - 405
EP  - 428
VL  - 20
IS  - 4
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CMB-1977-062-2/
DO  - 10.4153/CMB-1977-062-2
ID  - 10_4153_CMB_1977_062_2
ER  -