@article{TRSPY_2002_237_a5,
     author = {L. R\"uschendorf},
     title = {On {Upper} and {Lower} {Prices} in {Discrete-Time} {Models}},
     journal = {Informatics and Automation},
     pages = {143--148},
     publisher = {mathdoc},
     volume = {237},
     year = {2002},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_2002_237_a5/}
}