SPECTRA OF LANTHANIDE AND TUNGSTEN OXYCHLORIDES DOPED WITH NEODYMIUM AND EUROPIUM СтатьяVenskovskii N.I., Zolin V.F., Markushev V.M., Ngassapa F.N.B., Tararov A.V., Tupoleva A.L.Journal of Applied Spectroscopy. Том 59. 1994. С. 537-542
