@article{DOCMA_2012__S3__a0,
     author = {Schachermayer, Walter},
     title = {Optimisation and utility functions},
     journal = {Documenta mathematica},
     pages = {455--460},
     publisher = {mathdoc},
     volume = {Optimization Stories},
     year = {2012},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DOCMA_2012__S3__a0/}
}