@article {PIE155,
	title = {An inverse ecosystem model of year-to-year variations with first order approximation to the annual mean fluxes.},
	journal = {Ecological Modeling},
	volume = {187},
	year = {2005},
	note = {PD Plum Data},
	pages = {369-388},
	keywords = {Ecosystem modeling, First order approximation, Flux analysis, Inverse model, LTER-PIE, Time scale separation},
	doi = {10.1016/j.ecolmodel.2005.02.003},
	author = {Wan, Z. and Vallino, J.}
}
@article {PIE51,
	title = {Improving marine ecosystem models: Use of data assimilation and mesocosm experiments.},
	journal = {Journal of Marine Research},
	volume = {58},
	year = {2000},
	note = {PI Plum Data},
	pages = {117-164},
	keywords = {ecosystem, LTER-PIE, marine, mesocosm, model},
	doi = {10.1357/002224000321511223},
	author = {Vallino, J.}
}
@article {PIE22,
	title = {Ipswich River nutrient dynamics: Preliminary assessment of a simple nitrogen-processing model},
	journal = {Biological Bulletin},
	volume = {197},
	year = {1999},
	note = {REU},
	pages = {289-290},
	keywords = {Ipswich River, land use, LTER-PIE, modeling, nutrient dynamics},
	doi = {10.2307/1542657},
	author = {Pease, K. M. and Claessens, L. and Hopkinson, C. and Rastetter, E. and Vallino, J. and Kilham, N.}
}
