@article{MET_1987__34_176114,
     author = {I. Klein},
     title = {On a {Theory} of {Scale} {Types.}},
     journal = {Metrika},
     pages = {167--175},
     publisher = {mathdoc},
     volume = {34},
     year = {1987},
     zbl = {0627.62003},
     url = {http://geodesic.mathdoc.fr/item/MET_1987__34_176114/}
}