Anil K. Jain Xiaowei Xu Tin Kam Ho Fan Xiao Uniformity Testing Using Minimal Spanning Tree. 281-284 2002 ICPR (4) http://doi.ieeecomputersociety.org/10.1109/ICPR.2002.1047451 db/conf/icpr/icpr2002-4.html#JainXHX02