Помогите со статьями:
1. H. D. K. Drew and F. H. Pearman; "5. Chemiluminescent organic compounds. Part II. The effect of substituents on the closure of phthalhydrazides to 5- and 6-membered rings"; Journal of the Chemical Society; 1937; 26-33.
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dx.doi.org/10.1039/jr9370000026
