https://www.nist.gov/publications/chemical-twinning-pyrochlore-structure-system-bi2o3-nb2o5
Chemical Twinning of the Pyrochlore Structure in the System Bi2O3-Nb2O5 | NIST
Feb 19, 2017 - New ternary bismuth iron niobates having structures based on chemical twinning of pyrochlore are described.
of thepyrochlore structurechemicaltwinning