H-Tree

• Chee Chin Low, Hongjun Lu, Beng Chin Ooi, Jiawei Han: Efficient Access Methods in Deductive and Object-Oriented Databases. DOOD 1991: 68-84
• Chee Chin Low, Beng Chin Ooi, Hongjun Lu: H-trees: A Dynamic Associative Search Index for OODB. SIGMOD Conference 1992: 134-143