1. ESR single crystal study of Fe3+ with large rhombic fine structure splitting;Aasa;Arkiv. Kemi.,1965
2. Electron spin resonance studies of kaolins;Angel,1973
3. ESR spectra of humic acids;Atherton;Tetrahedron,1967
4. Precision g-value measurements on free radicals of biological interest;Blois,1960
5. The EPR of high-spin Fe3+ in rhombic fields;Blumberg,1967