title: Poly(biradicals): oligomers of 1,3-diphosphacyclobutane-2,4-diyl units.
authors.affiliation: Department of Chemistry, Graduate School of Science, Tohoku University, Aoba, Sendai 980-8578, Japan. shigeito@m.tains.tohoku.ac.jp
authors.forename: Shigekazu
authors.initials: S
authors.lastname: Ito
authors.forename: Joji
authors.initials: J
authors.lastname: Miura
authors.forename: Noboru
authors.initials: N
authors.lastname: Morita
authors.forename: Masaaki
authors.initials: M
authors.lastname: Yoshifuji
authors.forename: Anthony J
authors.initials: AJ
authors.lastname: Arduengo