@incollection{26888,
author = {Bernd Kirchheim and Stefan MÃ¼ller and Vladimir Sverak},
title = {{Studying nonlinear pde by geometry in matrix space}},
booktitle = {Geometric analysis and nonlinear partial differential equations},
editor = {Stefan Hildebrandt},
publisher = {Springer},
address = {Berlin [u.a.]},
year = {2003},
pages = {347--395},isbn={3-540-44051-8},
}