BibTex format
@article{Guo:2016:10.1137/120900320,
author = {Guo, GG and Jacquier, A and Martini, CM and Neufcourt, LN},
doi = {10.1137/120900320},
journal = {SIAM Journal on Financial Mathematics},
pages = {619--641},
title = {Generalized Arbitrage-Free SVI Volatility Surfaces},
url = {http://dx.doi.org/10.1137/120900320},
volume = {7},
year = {2016}
}