@article{CMH_1981__56_139870,
     author = {J. Rohlfs},
     title = {The {Lefschetz} number of an involution on the space of classes of positive definite quadratic forms.},
     journal = {Commentarii mathematici Helvetici},
     pages = {272--296},
     year = {1981},
     volume = {56},
     zbl = {0474.10019},
     url = {http://geodesic.mathdoc.fr/item/CMH_1981__56_139870/}
}