Maintenance work on the ZORA databases is scheduled for Wednesday 22 May 2019 from 20:00-22:00. During this period ZORA and JDB will not be available. Thank you for your understanding.
Hess, Peter; Poláčik, P (1994). Symmetry and convergence properties for non-negative solutions of nonautonomous reaction–diffusion problems. Proceedings of the Royal Society of Edinburgh: Section A, 124(03):573-587.