Uzoukwu, B.A., Duddeck, H. and Okeke, S.I., 1998. Synthesis and spectroscopic studies of 4-adipoyl-bis (1-phenyl-3-methyl-pyrazolone-5) as a bis (1,3-diketone). Journal of the National Science Foundation of Sri Lanka, 26(3), pp.229–233. DOI: http://doi.org/10.4038/jnsfsr.v26i3.5005

Uzoukwu BA, Duddeck H, Okeke SI. Synthesis and spectroscopic studies of 4-adipoyl-bis (1-phenyl-3-methyl-pyrazolone-5) as a bis (1,3-diketone). Journal of the National Science Foundation of Sri Lanka. 1998;26(3):229–33. DOI: http://doi.org/10.4038/jnsfsr.v26i3.5005

Uzoukwu, B. A., Duddeck, H., & Okeke, S. I. (1998). Synthesis and spectroscopic studies of 4-adipoyl-bis (1-phenyl-3-methyl-pyrazolone-5) as a bis (1,3-diketone). Journal of the National Science Foundation of Sri Lanka, 26(3), 229–233. DOI: http://doi.org/10.4038/jnsfsr.v26i3.5005

Uzoukwu BA, Duddeck H and Okeke SI, ‘Synthesis and Spectroscopic Studies of 4-adipoyl-bis (1-phenyl-3-methyl-pyrazolone-5) as a Bis (1,3-diketone)’ (1998) 26 Journal of the National Science Foundation of Sri Lanka 229 DOI: http://doi.org/10.4038/jnsfsr.v26i3.5005

Uzoukwu, B.A., H. Duddeck, and S.I. Okeke. 1998. “Synthesis and Spectroscopic Studies of 4-adipoyl-bis (1-phenyl-3-methyl-pyrazolone-5) as a Bis (1,3-diketone)”. Journal of the National Science Foundation of Sri Lanka 26 (3): 229–33. DOI: http://doi.org/10.4038/jnsfsr.v26i3.5005

Uzoukwu, B.A., H. Duddeck, and S.I. Okeke. “Synthesis and Spectroscopic Studies of 4-adipoyl-bis (1-phenyl-3-methyl-pyrazolone-5) as a Bis (1,3-diketone)”. Journal of the National Science Foundation of Sri Lanka 26, no. 3 (1998): 229–33. DOI: http://doi.org/10.4038/jnsfsr.v26i3.5005

Uzoukwu, B. A., et al.. “Synthesis and Spectroscopic Studies of 4-adipoyl-bis (1-phenyl-3-methyl-pyrazolone-5) as a Bis (1,3-diketone)”. Journal of the National Science Foundation of Sri Lanka, vol. 26, no. 3, 1998, pp. 229–33. DOI: http://doi.org/10.4038/jnsfsr.v26i3.5005