@article{macklin07_jtb,
 author="Macklin, Paul and Lowengrub, John S.",
 title="{Nonlinear simulation of the effect of microenvironment on tumor growth}",
 journal="J. Theor. Biol.",
 volume="245",
 number="4",
 year="2007",
 pages="677-704",
 DOI="10.1016/j.jtbi.2006.12.004",
 URL="http://dx.doi.org/10.1016/j.jtbi.2006.12.004",
}