Space-Efficient Parallel Merging

@article{Katajainen1992SpaceEfficientPM,
  title={Space-Efficient Parallel Merging},
  author={Jyrki Katajainen and Christos Levcopoulos and Ola Petersson},
  journal={ITA},
  year={1992},
  volume={27},
  pages={295-310}
}