1. A survey on interval model simulators and their properties related to fault detection;Armengol;IFAC World Congress 1999,1999
2. Modal intervals: functions;Gardeñer;Polish Symposium on Interval and Fuzzy Mathematics,1986
3. Modal intervals: reasons and ground semantics;Gardeñes;Lecture Notes in Computer Science,1986
4. Presentation of the research group sigla/x;Gardeñes,1995
5. Problems of interval-based qualitative reasoning;Struss;Readings in qualitative reasoning about physical systems,1990