Reock, Ernest (1961). "A Note: Measuring Compactness as a Requirement of Legislative Apportionment". Midwest Journal of Political Science. 5 (1): 70–74. doi:10.2307/2109043. JSTOR2109043.
Reock, Ernest (1961). "A Note: Measuring Compactness as a Requirement of Legislative Apportionment". Midwest Journal of Political Science. 5 (1): 70–74. doi:10.2307/2109043. JSTOR2109043.
Young, H. Peyton (1988). "Measuring the Compactness of Legislative Districts". Legislative Studies Quarterly. 13 (1): 105–115. JSTOR439947.