@InProceedings{DLNTW09, author = "Samir Datta and Nutan Limaye and Prajakta Nimbhorkar and Thomas Thierauf and Fabian Wagner", title = "Planar Graph Isomorphism is in Log-Space ", booktitle = "24th IEEE Conference on Computational Complexity (CCC)", publisher = "IEEE Computer Society Press", year = "2009", pages = "203-214", }