The following publications are possibly variants of this publication:
- A Better Approximation Algorithm for Finding Planar SubgraphsGruia Calinescu, Cristina G. Fernandes, Ulrich Finkler, Howard J. Karloff. jal, 27(2):269-302, 1998.
- A New Approximation Algorithm for Finding Heavy Planar SubgraphsGruia Calinescu, Cristina G. Fernandes, Howard J. Karloff, Alexander Zelikovsky. algorithmica, 36(2):179-205, 2003. [doi]