@article{DBLP:journals/siamads/Guckenheimer08,
author = {John Guckenheimer},
title = {Singular Hopf Bifurcation in Systems with Two Slow Variables},
journal = {SIAM J. Applied Dynamical Systems},
volume = {7},
number = {4},
year = {2008},
pages = {1355-1377},
ee = {http://dx.doi.org/10.1137/080718528},
bibsource = {DBLP, http://dblp.uni-trier.de}
}