by Evangelidis Georgios
Reference:
The HBΠ-tree: a concurrent and recoverable multi-attribute index structure (Evangelidis Georgios), PhD thesis, College of Computer Science, Northeastern University, Boston, MA, USA, 1994.
Bibtex Entry:
@phdthesis{evangelidis1994hbii,
  title={The HBΠ-tree: a concurrent and recoverable multi-attribute index structure},
  author={Evangelidis, Georgios},
  year={1994},
  school={College of Computer Science, Northeastern University, Boston, MA, USA}
}