1. A comparative study of different reduction methods, Part 1;Decoster;Journal A,1976
2. A comparative study of different reduction methods, Part 2;Decoster;Journal A,1976
3. Sur la synthèse de modèles réduits par agrégation;Bertrand;RAIRO,1976
4. A unified derivation and critical review of modal approaches to model reduction;Bonvin;International Journal of Control,1982
5. Recent developments in model reduction;Bertrand;RAIRO– APII,1985