TY - JOUR AU - Brown, Jeanice AU - Yen, J. AU - Schantz, Michele AU - Porter, Barbara AU - Sharpless, Katherine C2 - Journal of Agricultural and Food Chemistry DA - 2004-05-05 LA - en M1 - 52 PB - Journal of Agricultural and Food Chemistry PY - 2004 TI - Determination of Caffeine, Theobromine, and Theophylline in Standard Reference Material 2384, Baking Chocolate, Using Reversed-Phase Liquid Chromatography ER -