@article{EP_2013_39_a8,
     author = {Christoffer Heckman and Jakob Kotas and Richard Rand},
     title = {Center {Manifold} {Reduction} of the {Hopf-Hopf} {Bifurcation} in a {Time} {Delay} {System}},
     journal = {ESAIM. Proceedings},
     pages = {57--65},
     publisher = {mathdoc},
     volume = {39},
     year = {2013},
     doi = {10.1051/proc/201339008},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.1051/proc/201339008/}
}