1. Linear system optimisation with prescribed degree of stability
2. SOLHEIM , O. A. , and SJETHBE , A. , 1968 , Paper presented at I.F.A.C. Symposium on Multivariablo Control Systems , Diisseldorf , October 7–8 .
3. SOLHEIM , O. A. , 1971 , Report No. 71–78-W . Division of Automatic Control , The Technical University of Norway .