Journal Article
Brooks, J. R.; Buchmann, N.; Phillips, S.; Ehleringer, B.; Evans, R. D.; Lott, M.; Martinelli, L. A.; Pockman, W. T.; Sandquist, D.; Sparks, J. P. et al.; Sperry, L.; Williams, D.; Ehleringer, J. R.: Heavy and light beer: A carbon isotope approach to detect C
4 carbon in beers of different origins, styles, and prices. Journal of Agricultural and Food Chemistry
50 (22), pp. 6413 - 6418 (2002)