2008YS/T 568.1-2008 Chemical analysis methods for zirconium oxide and hafnium oxide.Determination of zirconium oxide and hafnium oxide total content.Mandelic acid gravimetric method
2006YS/T 568.1-2006 Determination of zirconium oxide and hafnium oxide content in zirconium oxide and hafnium oxide (mandelic acid gravimetric method)