"MELIRA,makoto seino,Teruaki Hayakawa,MASA-AKI KAKIMOTO","Synthesis of hyperbranched-linear star block copolymers by atom transfer radical polymerization of styrene using hyperbranched poly(siloxysilane) (HBPS) macroinitiator",,"European Polymer Journal",,"vol. 46",,"  217-225",2009,Oct.