db/conf/cikm/Henrich96.html Andreas Henrich Adapting a Spatial Access Structure for Document Representations in Vector Space. 19-26 CIKM1996/P019.pdf 1996 conf/cikm/96 CIKM db/conf/cikm/cikm96.html#Henrich96 http://doi.acm.org/10.1145/238355.238367