" Method for chemical analysis of yttrium and yttrium oxide--Determination of lanthanum oxide, cerium oxide, praseodymium oxide, neodymium oxide, samarium oxide, europium oxide, gadolinium oxide, terbium oxide, dysprosium oxide, holmium oxide,erbium oxide
" Gadolinium oxide-Determination of samarium oxide, europium oxide, terbium oxide, dysprosium oxide and yttrium oxide contents-Emission spectrographic method"
" Methods for chemical analysis of rare earth chloride and carbonate--Determination of lanthanum oxide,cerium oxide,praseodymium oxide,neodymiium oxide,samarium oxide,europium oxide and yttrium content"
