International Reference Reagent for Haemoglobin A2 - NIBSC
 NORMAL Hb A2 CONTROL
 HG-A1, HG-A2, HG-A3, HG-A4 - Power Equipment Direct
 ICSH recommendations for the measurement of Haemoglobin A2
 Structural bases of the inhibitory effects of hemoglobin F and - NCBI