BibTex format
@article{Zhang:2018:10.1016/j.tra.2018.08.004,
author = {Zhang, F and Graham, DJ and Wong, M},
doi = {10.1016/j.tra.2018.08.004},
journal = {Transportation Research Part A: Policy and Practice},
pages = {191--215},
title = {Quantifying the substitutability and complementarity between high-speed rail and air transport},
url = {http://dx.doi.org/10.1016/j.tra.2018.08.004},
volume = {118},
year = {2018}
}