title: Structural units and their periodicity in carbon nanotubes.
authors.affiliation: Institute for Materials Chemistry and Engineering, Kyushu University, Kasuga, Fukuoka 816-8580, Japan.
authors.forename: Donghui
authors.initials: D
authors.lastname: Long
authors.forename: Bai
authors.initials: B
authors.lastname: An
authors.forename: Kiyoshi
authors.initials: K
authors.lastname: Yokogawa
authors.forename: Licheng
authors.initials: L
authors.lastname: Ling
authors.forename: Jin
authors.initials: J
authors.lastname: Miyawaki
authors.forename: Isao
authors.initials: I
authors.lastname: Mochida
authors.forename: Seong-Ho
authors.initials: SH
authors.lastname: Yoon