@article{ELMA_1950__5_140544,
     author = {Walter Nef},
     title = {Zum zweiten {Hauptsatz} der {Thermodynamik.}},
     journal = {Elemente der Mathematik},
     pages = {78--81},
     year = {1950},
     volume = {5},
     url = {http://geodesic.mathdoc.fr/item/ELMA_1950__5_140544/}
}