UCUN, F. Et Al. 2007. Molecular structures and vibrational frequencies of xanthine and its methyl derivatives (caffeine and theobromine) by ab initio Hartree-Fock and density functional theory calculations. Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy , vol.67, no.2 , 342-349.

UCUN, F., Saǧlam, A., & Güçlü, V., (2007). Molecular structures and vibrational frequencies of xanthine and its methyl derivatives (caffeine and theobromine) by ab initio Hartree-Fock and density functional theory calculations. Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy , vol.67, no.2, 342-349.

UCUN, Fatih, Adnan Saǧlam, And VESİLE KÜÇÜK. "Molecular structures and vibrational frequencies of xanthine and its methyl derivatives (caffeine and theobromine) by ab initio Hartree-Fock and density functional theory calculations," Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy , vol.67, no.2, 342-349, 2007

UCUN, Fatih Et Al. "Molecular structures and vibrational frequencies of xanthine and its methyl derivatives (caffeine and theobromine) by ab initio Hartree-Fock and density functional theory calculations." Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy , vol.67, no.2, pp.342-349, 2007

UCUN, F. Saǧlam, A. And Güçlü, V. (2007) . "Molecular structures and vibrational frequencies of xanthine and its methyl derivatives (caffeine and theobromine) by ab initio Hartree-Fock and density functional theory calculations." Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy , vol.67, no.2, pp.342-349.

@article{article, author={Fatih UCUN Et Al. }, title={Molecular structures and vibrational frequencies of xanthine and its methyl derivatives (caffeine and theobromine) by ab initio Hartree-Fock and density functional theory calculations}, journal={Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy}, year=2007, pages={342-349} }