Discrete and continuous dynamical systems. Series A. 2012 Aug;32(8):2997-3007. DOI:10.3934/dcds.2012.32.2997
Discrete and continuous dynamical systems. Series A. 2012 Aug 1;32(8):2729-2757. DOI:10.3934/dcds.2012.32.2729
Discrete and continuous dynamical systems. Series A. 2012 Aug;32(8):2853-2877. DOI:10.3934/dcds.2012.32.2853