Conference paper
Constraint-based query optimization for spatial databases
Richard Helm, Kim Marriott, et al.
SIGMOD/PODS/ 1991
Paper
Ensuring Semantic integrity of reusable objects (panel)
Abstract
No abstract available.
Related
Richard Helm, Ian M. Holland, et al.
ECOOP 1990
Richard Helm, Ian M. Holland, et al.
ACM SIGPLAN Notices
Conference paper
Building visual language parsers
Richard Helm, Kim Marriott, et al.
CHI 1991