@article{CRMATH_2016__354_6_595_0,
     author = {Antonopoulos, Panagiotis and Smyrnelis, Panayotis},
     title = {A maximum principle for the system {\ensuremath{\Delta}\protect\emph{u}\,\ensuremath{-}\,\ensuremath{\nabla}\protect\emph{W}(\protect\emph{u})=0}},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {595--600},
     publisher = {Elsevier},
     volume = {354},
     number = {6},
     year = {2016},
     doi = {10.1016/j.crma.2016.03.015},
     language = {en},
     url = {http://www.numdam.org/articles/10.1016/j.crma.2016.03.015/}
}