db/conf/dl/ArdoK99.html Anders Ardö Traugott Koch Creation and Automatic Classification of a Robot-Generated Subject Index. 210-211 DL/1999/P210.pdf 1999 conf/dl/1999 ACM DL http://doi.acm.org/10.1145/313238.313319 db/conf/dl/dl99.html#ArdoK99