1. M. M. Ndamitso:
Department of Chemistry, Federal University of Technology, P. M. Box 65, Minna, NIGERIA
2. M. B. Etsuyankpa:
Department of Chemistry, Federal University of Technology, P. M. Box 65, Minna, NIGERIA
3. J. O. Jacob:
Department of Chemistry, Federal University of Technology, P. M. Box 65, Minna, NIGERIA
4. J. T. Mathew:
Department of Chemistry, Federal University of Technology, P. M. Box 65, Minna, NIGERIA
5. E. Y Shaba:
Department of Chemistry, Federal University of Technology, P. M. Box 65, Minna, NIGERIA
6. K. C. Olisedeme:
Department of Chemistry, Federal University of Technology, P. M. Box 65, Minna, NIGERIA