@incollection{ref,
author = {Luiz Henrique de Figueiredo and Waldemar Celes and Roberto Ierusalimschy},
title = {Programming Advanced Control Mechanisms with Lua Coroutines},
booktitle = {Game Programming Gems 6},
editor = {Michael Dickheiser},
publisher = {Charles River Media},
year = {2006},
pages = {357--369}
}