@article{Hutchings:59088,
      author = {Hutchings, Timothy R. and Nordblom, Thomas L. and Li,  Guangdi and Conyers, Mark},
      title = {{Economics of managing acid soils in dryland mixed  cropping systems: comparing gross margins with whole-farm  analysis derived using a business process model}},
      pages = {28},
      year = {2010},
}