@book{Alston2010,
author = {Alston, J.M. and Andersen, M.A. and James, J.S. and Pardey, P.G.},
title= {Persistence pays: US agricultural productivity growth and the benefits from public R&D spending},
year = {2010},
doi = {10.1007/978-1-4419-0658-8},
address = {New York},
publisher = {Springer},
}