@article{10_4064_am35_1_5,
     author = {Andrzej Nowakowski},
     title = {Nonhomogeneous boundary value problem for
 a semilinear hyperbolic equation},
     journal = {Applicationes Mathematicae},
     pages = {81--95},
     publisher = {mathdoc},
     volume = {35},
     number = {1},
     year = {2008},
     doi = {10.4064/am35-1-5},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/am35-1-5/}
}