TY - RPRT A1 - Aldstadt, J. A1 - Chen, D.M. A1 - Getis, A. T1 - Point Pattern Analysis (PPA) online software (Version 1.0a): K-Function (second-order analysis) and Local Gi* statistic Y1 - 1998 UR - http://www.nku.edu/~longa/cgi-bin/cgi-tcl-examples/generic/ppa/ppa.cgi PB - San Diego State University, Department of Geography ER -