Помогите, пожалуйста, со статьями:
1) Civcir P.U.
AM1 and PM3 study of tautomerism of xanthine in the gas and aqueous phases
Journal of Molecular Structure: THEOCHEM, Volume 545, Number 1, 9 July 2001 , pp. 7-15(9)
- DOI:
http://dx.doi.org/10.1016/S0166-1280(00)00821-6
FTIR and FT-Raman spectra, assignments, ab initio HF and DFT analysis of xanthine
Spectrochim Acta A Mol Biomol Spectrosc. 2011 Jun;79(1):161-8.
- DOI:
http://dx.doi.org/10.1016/j.saa.2011.02.029
Tautomerism of xanthine: The second-order MØller-Plesset study
Structural Chemistry, August 1995, Volume 6, Issue 4-5, pp 281-286
- DOI:
http://dx.doi.org/10.1007/BF02293121