BibTex format
@article{Cont:2013:10.1111/j.1467-9965.2011.00503.x,
author = {Cont, R and Deguest, R},
doi = {10.1111/j.1467-9965.2011.00503.x},
journal = {Mathematical Finance},
pages = {496--530},
title = {EQUITY CORRELATIONS IMPLIED BY INDEX OPTIONS: ESTIMATION AND MODEL UNCERTAINTY ANALYSIS},
url = {http://dx.doi.org/10.1111/j.1467-9965.2011.00503.x},
volume = {23},
year = {2013}
}