SPECTROSCOPY OF AMORPHOUS SOLIDS WITH MOLECULAR-STRUCTURES ArticleSHEKA E.F.Uspekhi Fizicheskikh Nauk. Vol. 160. 1990. P.. 263-298
LN2O3-HI-H2O,LNI3-HI-H2O(LN=ER,TM,YB) SYSTEMS AT 25-DEGREES-C ArticleEMELYANOV V.I., MOLODKIN A.K., SUKHOV N.I., DOLGANEV V.P.Russian Journal of Inorganic Chemistry. Vol. 35. 1990. P.. 490-494