JANČÁŘ, Luděk, Irena JANČÁŘOVÁ, Radvana ŠULOVÁ and Vlastimil KUBÁŇ. The Complex Equilibria in the Rare Earth Elements-Arsenazo III Systems. The Methods of Rare Earth Elements Determination with Arsenazo III. Scripta Fac. Sci. Nat. Univ. Masaryk. Brun. Brno: Masarykova univerzita, 1998, 27-28, Chemistry, p. 125-151. ISSN 80-210-2008-3.