1. Spectrophotometric and magnetic studies of glasses containing iron in relation to their structure;Abou-El-Azm;J. Soc. Glass Tech.,1954
2. North American tektites;Barnes;Univ. Tex. Publ. 3945,1940
3. Properties of tektites pertinent to their origin;Barnes;Geochim. et Cosmochim. Acta,1958
4. The absorption spectra of tektites and other natural glasses;Cohen;Geochim. et Cosmochim. Acta,1958
5. Symposium on tektites,1958