@article{JRAM_1996__472_153795,
     author = {Peter Pol\'acik and Xu-Yan Chen},
     title = {Asymptotic periodicity of positive solutions of reaction diffusion equations on a ball.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {17--52},
     publisher = {mathdoc},
     volume = {472},
     year = {1996},
     zbl = {0839.35059},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1996__472_153795/}
}