@article{JDM_1973__75_146624,
     author = {Detlef Laugwitz},
     title = {Ein {Weg} zur {Nonstandard-Analysis.}},
     journal = {Jahresbericht der Deutschen Mathematiker-Vereinigung},
     pages = {66--93},
     publisher = {mathdoc},
     volume = {75},
     year = {1973},
     zbl = {0278.26017},
     url = {http://geodesic.mathdoc.fr/item/JDM_1973__75_146624/}
}