@article{10_4153_CMB_1979_021_0,
     author = {Swanson, C. A.},
     title = {Semilinear {Second} {Order} {Elliptic} {Oscillation}},
     journal = {Canadian mathematical bulletin},
     pages = {139--157},
     year = {1979},
     volume = {22},
     number = {2},
     doi = {10.4153/CMB-1979-021-0},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1979-021-0/}
}