1. Nonlinear control of hydraulic drives;Dietz,1984
2. Canonical forms for bilinear systems;Dorissen;Systems and control letter!!,1989
3. Effective construction of linear state-variable models from input/output functions;Ho;Regelungstechnik,1966
4. Direct construction of minimal bilinear realizations from nonlinear input-output maps;Isidori;IEEE TR AC,1973
5. Bilinear control processes;Mohler,1973