@article{DOCMA_2012__S3__a43,
     editor = {Gr\"otschel, Martin},
     title = {Preface},
     journal = {Documenta mathematica},
     pages = {1--2},
     publisher = {mathdoc},
     volume = {Optimization Stories},
     year = {2012},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DOCMA_2012__S3__a43/}
}