Robert S. (University of Southern California Ellwood USA),Patrick Horn
（2）
;Kaplan, Robert (University of Southern California, USA),Baldauf, Richard (University of Queensland, Australia)
（1）
Robert S Ellwood (University of Southern California USA),Barbara a McGraw
（1）
Robert S. (University of Southern California Ellwood USA)
（1）
Robert S. (University of Southern California Ellwood USA),Barbara A. (Saint Mary's College of California McGraw USA)
（1）
