@Article{JGAA-261,
   author = {{Demetres} {Christofides} and {Peter} {Keevash} and {Daniela} {Kühn} and {Deryk} {Osthus}},
   title = {Finding Hamilton cycles in robustly expanding digraphs},
   journal = {Journal of Graph Algorithms and Applications},
   year = {2012},
   volume = {16},
   number = {2},
   pages = {335--358},
   doi = {10.7155/jgaa.00261}
}