@article{DBLP:journals/appml/ZhangD09,
  title = "The hexagonal chains with the extremal third-order Randic index",
  author = "Jie Zhang and Hanyuan Deng",
  year = "2009",
  journal = "Appl. Math. Lett.",
  number = "12",
  pages = "1841-1845",
  volume = "22",
}