共 9 条
[1]
BORKER E, 1960, J ASSOC OFF AGR CHEM, V43, P620
[2]
HORWITZ W, 1955, OFFICIAL METHODS ANA, P238
[3]
HORWITZ W, 1955, OFFICIAL METHODS ANA, P805
[4]
RAPID SPECTROPHOTOMETRIC DETERMINATION OF CAFFEINE
[J].
ANALYTICAL CHEMISTRY,
1948, 20 (12)
:1162-1166
[8]
POLZELLA L, 1961, B LAB CHIM PROV, V12, P23