BibTex format
@article{Zaffaroni:2006,
author = {Zaffaroni, P},
journal = {Journal of Time Series Analysis},
pages = {521--544},
title = {Contemporaneous Aggregation of GARCH Processes},
url = {http://hdl.handle.net/10044/1/646},
volume = {28},
year = {2006}
}