1. Devy Vareta , F. a. , 2000 , Pseudo-invariance Sous Groupe de Transformations: un Nouveau Concept pour la Commande obuste . In Seminaire Toulousain Representation Diffusive et Application, no. 1 .
2. Dorcak , L. , Petras , I. , Kostial , I. and Terpak , J. 2001 , State space controller design for the fractional order regulated system . In ICCC, Korynica, Poland , pp. 15 – 20 .