Koster, Gertjan; Kropman, Boike L.; Rijnders, Guus J. H. M.; Blank, Dave H. A.; Rogalla, Horst (1998). "Quasi-ideal strontium titanate crystal surfaces through formation of strontium hydroxide". Applied Physics Letters. 73 (20): 2920. Bibcode:1998ApPhL..73.2920K. DOI:10.1063/1.122630.
Koster, Gertjan; Kropman, Boike L.; Rijnders, Guus J. H. M.; Blank, Dave H. A.; Rogalla, Horst (1998). "Quasi-ideal strontium titanate crystal surfaces through formation of strontium hydroxide". Applied Physics Letters. 73 (20): 2920. Bibcode:1998ApPhL..73.2920K. DOI:10.1063/1.122630.