@article{10_21136_CMJ_1986_102088,
     author = {Krej\v{c}{\'\i}, Pavel},
     title = {Periodic solutions to {Maxwell} equations in nonlinear media},
     journal = {Czechoslovak Mathematical Journal},
     pages = {238--258},
     publisher = {mathdoc},
     volume = {36},
     number = {2},
     year = {1986},
     doi = {10.21136/CMJ.1986.102088},
     mrnumber = {831312},
     zbl = {0614.35014},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1986.102088/}
}