@article{DBLP:journals/urban/MacMillanJM04,
author = {R. A. MacMillan and
R. Keith Jones and
David H. McNabb},
title = {Defining a hierarchy of spatial entities for environmental
analysis and modeling using digital elevation models (DEMs)},
journal = {Computers, Environment and Urban Systems},
volume = {28},
number = {3},
year = {2004},
pages = {175-200},
ee = {http://dx.doi.org/10.1016/S0198-9715(03)00019-X},
bibsource = {DBLP, http://dblp.uni-trier.de}
}