"Tsuyoshi Michinobu,Hiroe Kumazawa,Eiji Otsuki,Hiroaki Usui,Kiyotaka Shigehara","Synthesis and Properties of Nitrogen-Linked Poly(2,7-carbazole)s as Hole-Transport Material for Organic Light Emitting Diodes",,"J. Polym. Sci. Part A: Polym. Chem.","Wiley","Vol. 47","No. 15","pp. 3880-3891",2009,June