@article{10_4153_CMB_1975_076_7,
     author = {Wang, Chung-Lie},
     title = {A {Uniqueness} {Theorem} on the {Degenerate} {Cauchy} {Problem(1)}},
     journal = {Canadian mathematical bulletin},
     pages = {417--421},
     year = {1975},
     volume = {18},
     number = {3},
     doi = {10.4153/CMB-1975-076-7},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1975-076-7/}
}