@Article{npg-15-397-2008,
AUTHOR = {Biswas, A. and Si, B. C. and Walley, F. L.},
TITLE = {Spatial relationship between δ$^{15}$N and elevation in agricultural landscapes},
JOURNAL = {Nonlinear Processes  in Geophysics},
VOLUME = {15},
YEAR = {2008},
NUMBER = {3},
PAGES = {397--407},
URL = {http://www.nonlin-processes-geophys.net/15/397/2008/},
ISSN = {1023-5809}
}