Charles, H., Godfray, J., Beddington, J. R., Crute, I. R., Haddad, L., Lawrence, D.,
Muir, J. F., Pretty, J., Robinson, S., Thomas, S. M., and Toulmin, C., 2010, Food
security: The challenge of feeding 9 billion people, Science, Vol. 327, No. 5967,
pp. 812-818.
