Adrien Albert, D. J. Brown, Gordon Cheeseman: Pteridine studies. Part I. Pteridine, and 2- and 4-amino- and 2- and 4-hydroxy-pteridines, J. Chem. Soc., 1951, 474–485; doi:10.1039/JR9510000474.
Adrien Albert, D. J. Brown, Gordon Cheeseman: Pteridine studies. Part I. Pteridine, and 2- and 4-amino- and 2- and 4-hydroxy-pteridines, J. Chem. Soc., 1951, 474–485; doi:10.1039/JR9510000474.