O'Hara, Andrew; Demkov, Alexander (2014). »Oxygen and nitrogen diffusion in alpha-hafnium from first principles«. Applied Physics Letters. 104 (21): 211909. Bibcode:2014ApPhL.104u1909O. doi:10.1063/1.4880657.
Lee, O. Ivan (1928). »The Mineralogy of Hafnium«. Chemical Reviews. 5: 17–37. doi:10.1021/cr60017a002.
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O'Hara, Andrew; Demkov, Alexander (2014). »Oxygen and nitrogen diffusion in alpha-hafnium from first principles«. Applied Physics Letters. 104 (21): 211909. Bibcode:2014ApPhL.104u1909O. doi:10.1063/1.4880657.