1. Spatio-temporal conceptual models: data structures+space+time;Parent,1999
2. Conceptual Modeling for Traditional and Spatio-Temporal Applications: The MADS Approach;Parent,2005
3. Modeling and manipulating multiple representations of spatial data;Vangenot,2002
4. COBALT: a design tool for geographic and temporal data application;Souleymane,2003
5. An abstraction mechanism for modeling generation;Gupta,1992