Wolfgang Hackbusch. On the Feedback Vertex Set Problem for a Planar Graph. Computing, 58(2):129-156, 1997. [doi]
@article{Hackbusch97,
title = {On the Feedback Vertex Set Problem for a Planar Graph},
author = {Wolfgang Hackbusch},
year = {1997},
url = {http://link.springer.de/link/service/journals/00607/bibs/7058002/70580129.htm},
tags = {planar graph, graph-rewriting, rewriting},
researchr = {https://researchr.org/publication/Hackbusch97},
cites = {0},
citedby = {0},
journal = {Computing},
volume = {58},
number = {2},
pages = {129-156},
}