1. “The display of statistical data from nuclear counting experiments”;Hooton;Nucl. Instr. Methods,1967
2. “A method for the analysis of pulse height spectra”;Graber;Nucl. Instr. Methods,1966
3. “Représentation mathématique des “photopeaks” de spectra gamma”;Muzyck;Nucl. Instr. Methods,1967
4. “The analysis of gamma-ray spectra”;Bradford;Nucl. Instr. Methods,1967
5. “Nouvelle methode graphique d'analyse des spectres gamma”;Steffens;Extrait des Publications de l'Université Officielle du Congo á Lumumbashi,1969