Ozone formation in the greater Cairo area Güsten, H.; Heinrich, G.; Weppner, J.; Abdel-Aal, M. M.; Abdel-Hay, F. A.; Ramadan, A. B.; Tawfik, F. S.; Ahmed, D. M.; Hassan, G. K. Y.; Cvitas, T.; Jeftic, J.; Klasinc, L. 1994. The Science of the Total Environment, 155, 285–95
Magnetic structures of α-FeMoO₄ and α-CoMoO₄ Ehrenberg, H.; Wltschek, G.; Trouw, F.; Kröner, T.; Weitzel, H.; Fuess, H. 1994. Journal of Magnetism and Magnetic Materials, 135, 355–60