@article{DMGT_2012_32_4_a14,
     author = {Lema\'nska, Magdalena and Zuazua, Rita},
     title = {Convex universal fixers},
     journal = {Discussiones Mathematicae. Graph Theory},
     pages = {807--812},
     publisher = {mathdoc},
     volume = {32},
     number = {4},
     year = {2012},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DMGT_2012_32_4_a14/}
}