SORPTION OF ZIRCONIUM AND HAFNIUM ON SILICA GEL IN THE PRESENCE OF PHOSPHORIC AND PHENYLARSENIC ACID AND IODATECALETKA R.1975; COLLECT. CZECHOSL. CHEM. COMMUNIC.; CZECHOSL.; DA. 1975; VOL. 40; NO 10; PP. 2941-2954; BIBL. 18 REF.Article

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A GROUP SEPARATION BASED ON ANION- AND CATION-EXCHANGE FROM HYDROFLUORIC ACID MEDIUM. APPLICATION TO MULTIELEMENT NEUTRON-ACTIVATION ANALYSIS OF NIOBIUM = SEPARATION DE GROUPE BASEE SUR UN ECHANGE D'ANIONS ET DE CATIONS EN MILIEU D'ACIDE FLUORHYDRIQUE. APPLICATION A L'ANALYSE MULTIELEMENT DU NIOBIUM PAR ACTIVATION NEUTRONIQUECALETKA R; KRIVAN V.1983; TALANTA (OXFORD); ISSN 0039-9140; GBR; DA. 1983; VOL. 30; NO 7; PP. 465-470; BIBL. 22 REF.Article

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UPTAKE OF INORGANIC ACIDS ON HYDROGELS OF TETRAVALENT HYDROXIDES AND ITS APPLICATION FOR THE PREPARATION OF SOME INORGANIC SORBENTSCALETKA R; TYMPL M.1976; J. RADIOANAL. CHEM.; SWITZ.; DA. 1976; VOL. 30; NO 1; PP. 155-172; BIBL. 30 REF.; (RADIOCHEM. CONF. 8. I; MARIANSKE LAZNE, CZECH.; 1975)Conference Paper

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CATION-EXCHANGE OF 43 ELEMENTS FOR HYDROFLUORIC ACID SOLUTIONCALETKA R; KRIVAN V.1983; TALANTA (OXFORD); ISSN 0039-9140; GBR; DA. 1983; VOL. 30; NO 7; PP. 543-545; BIBL. 15 REF.Article

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RETENTION OF ⁸⁵SR AND ¹⁴⁷PM ON INSOLUBLE HYDROXIDES AND PHOSPHATES PREPARED BY THE SOL-GEL PROCEDUREKEPAK F; CALETKA R; NOVA I et al.1975; J. RADIOANAL. CHEM.; SWITZ.; DA. 1975; VOL. 25; NO 2; PP. 247-254; BIBL. 7 REF.Article

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ANALYSIS OF REFRACTORY METALS FOR LITHIUM, BORON AND NITROGEN BY CHARGED PARTICLE ACTIVATION YIELDING ⁷BE AS THE INDICATOR RADIONUCLIDE = DOSAGE DU LITHIUM, DU BORE ET DE L'AZOTE DANS LES METAUX REFRACTAIRES PAR ACTIVATION AU MOYEN DE PARTICULES CHARGEES, CONDUISANT A ⁷BE COMME INDICATEUR RADIOACTIFSASTRI CS; CALETKA R; KRIVAN V et al.1982; JOURNAL OF RADIOANALYTICAL CHEMISTRY; ISSN 0022-4081; CHE; DA. 1982; VOL. 70; NO 1-2; PART. 2; PP. 273-285; BIBL. 16 REF.Conference Paper

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