Citation

O'Connell MJ , Ramsay CG Steel PJ (1985) Heterocyclic Tautomerism. II. 4-Acylpyrazolones. X-Ray Crystal Structures of 4-Benzoyl-5-methyl-2-phenylpyrazol-3(2H)-one and 4-Acetoacetyl-3-methyl-1-phenylpyrazol-5-ol. Australian Journal of Chemistry 38, 401-409.

https://doi.org/10.1071/CH9850401