1. BENGTSSON , G. , 1973 , Report 7341 , Division of Automatic Control , Lund Institute of Technology , Lund .
2. DAVISON , E. J. , and
WANG , S. H. , 1974 , Working Party of Design by Pole-Zero Assignment , St. John's College , Cambridge .
3. DESOER , C. A. , and
SCHULMAN , J. D. , 1973 , International Symposium on Circuit Theory , Toronto .
4. KOUVARITAKIS , B. , 1974 , Ph.D. Thesis , University of Manchester , Manchester .