@Article{JGAA-14,
   author = {{David} {Eppstein}},
   title = {Subgraph Isomorphism in Planar Graphs and Related Problems},
   journal = {Journal of Graph Algorithms and Applications},
   year = {1999},
   volume = {3},
   number = {3},
   pages = {1--27},
   doi = {10.7155/jgaa.00014}
}