1. An Algebraic Relation Between The LÖSch and Christaller Central Place Networks
2. Lösch, August, Woglom, W. H and Stolper, W. F. 1954.The Economics of Location, 115New Haven: Yale University Press. translated by
3. A NOTE ON SOME NUMBER PROPERTIES OF A HEXAGONAL HIERARCHICAL PLANE LATTICE+
4. Christaller, Walter and Baskin, C. W. 1966.Central Places in Southern Germany, 58–80. Englewood Cliffs, N.J.: Prentice-Hall, Inc. Brian J. L. Berry and William L. Garrison, “Recent Developments of Central Place Theory,”Papers and Proceedings, Regional Science AssociationVol. 4, (1958), pp. 107–120