Prathomjit Khachorncharoenkul และ Sajee Pianskool. (2012) Linear preservers on Hessenberg matrices. Chulalongkorn University:ม.ป.ท.Prathomjit Khachorncharoenkul และ Sajee Pianskool. 2012. Linear preservers on Hessenberg matrices. ม.ป.ท.:Chulalongkorn University;Prathomjit Khachorncharoenkul และ Sajee Pianskool. Linear preservers on Hessenberg matrices. ม.ป.ท.:Chulalongkorn University, 2012. Print.