@article{Kru1978,
vgclass = {refpap},
author = {Carol L. Krumhansl},
title = {Concerning the Applicability of Geometric Models to
Similarity Data: The Interrelationship between Similarity and Spatial
Density},
journal = {Psychological Review},
volume = {85},
number = {5},
pages = {445--463},
year = {1978},
}