@article{BMMS_2012_35_4_a12,
     author = {Chengfu Ye and Zhiquan Hu},
     title = {On the {Ordering} of {Trees} by the {Two} {Indices}},
     journal = {Bulletin of the Malaysian Mathematical Society},
     year = {2012},
     volume = {35},
     number = {4},
     url = {http://geodesic.mathdoc.fr/item/BMMS_2012_35_4_a12/}
}