@inbook{Butts2011,
author = {Butts, C.T. and Acton, R.M.},
title= {Spatial Modeling of Social Networks},
year = {2011},
editor = {Nyerges, T.},
editor = {Couclelis, H.},
editor = {McMaster, R.},
booktitle = {The Sage Handbook of GIS and Society Research},
address = {Thousand Oaks, CA},
publisher = {SAGE Publications},
pages = {222--250},
}