@InProceedings{amww-cssgo-87,
author = { Helmut Alt and Kurt Mehlhorn and Hubert Wagener and Emo Welzl },
title = { Congruence, similarity and symmetries of geometric objects },
booktitle = { Proc. 3rd Annu. ACM Sympos. Comput. Geom. },
year = { 1987 },
pages = { 308-315 },
}
